Designed & Made in the USA Since 1983
The MobileCollect RS-232 V2 Mobile Module is a battery-powered wireless transmitter for handheld and portable RS-232 instruments. It captures measurement data from your RS-232 gage, transmits it wirelessly over MicroRidge’s RM2.4 protocol to a paired MobileCollect Base Receiver, and delivers that data directly to any connected PC application — SPC software, Excel, a LIMS, or a PLC-linked system. The true cost of manual measurement data entry in a production environment is well documented. The RS-232 V2 Mobile Module eliminates transcription error at the source, for the specific class of instruments that require it: full RS-232 output devices.
Note: A transmitter cable is not included. Order the appropriate cable separately based on your gage brand and model.
Compatible Gages – RS-232 devices
Wireless Range – Up to 140 ft
Battery – CR2 Photo Lithium
Read Modes – Single, Continuous, TIR
Dimensions / Weight – 2.13″ × 1.44″ × 0.79″ / 1.6 oz
Certifications – FCC, IC, CE, RoHS2, REACH
Gage Connector – Sold separately
Origin – Designed & Made in the USA
$395.00
The RS-232 V2 Mobile Module is a battery-powered wireless transmitter for instruments that output full RS-232 voltage signals. A reading can be initiated three ways: pressing the Read button on the module (which can be configured via the Xpress or Extended Setup Program to send a serial command string to the instrument, prompting it to output a measurement), pressing the Send or Print button on the connected RS-232 instrument, or by the instrument transmitting data automatically. In all cases, the V2 captures the RS-232 data packet from the gage, transmits it wirelessly over MicroRidge’s RM2.4 protocol to a paired MobileCollect Base Receiver, and the Base forwards that data to the connected PC — appearing in whatever application is running: SPC software, Excel, a LIMS, or a custom data collection system.
No manual data entry. No cable tethered back to the workstation. For quality engineers managing measurement workflows on instruments that haven’t moved to digital outputs, the RS-232 V2 Mobile Module eliminates the transcription error risk that persists every time an operator reads a display and types a number.
MobileCollect offers three mobile transmitters. The RS-232 V2 Mobile Module is specifically designed for gages that output full RS-232 voltage levels — typically ±5V to ±8V on the data lines. These are instruments that connect to a PC via a DB9 serial cable and require a standard RS-232 port or USB-to-serial adapter.
Use the RS-232 V2 Mobile Module when your gage:
Do not use the RS-232 V2 Mobile Module for:
If you’re unsure whether your instrument outputs full RS-232 levels, check whether it ships with a standard DB9 serial cable for PC connection. If it does, the RS-232 V2 Mobile Module is the correct transmitter.
The RS-232 V2 Mobile Module covers the broad class of precision measurement instruments that transmit serial data at full RS-232 voltage levels. If your metrology workflow includes any of the following instrument types, this module is your wireless path to automated data collection:
Height Gages — Trimos, Mahr Federal, Mitutoyo, Starrett, and other electronic height gages with RS-232 output are common RS-232 V2 Mobile Module applications. Height gage measurement in a layout or incoming inspection environment often means the gage moves part to part — wired collection to a PC creates a cable management problem the V2 eliminates.
Bench Scales and Precision Balances — OHAUS, Mettler Toledo, A&D, and similar instruments with RS-232 serial output. Wireless data collection from a balance eliminates tethering to a PC in lab or production environments where contamination control, clean-room protocols, or simple workstation layout make cabled connections impractical.
Surface Roughness Testers — Portable profilometers (Mitutoyo SJ series, Mahr Perthometer, Zeiss, Taylor Hobson) with RS-232 output. Roughness measurement is often peripatetic — the instrument moves to the part, not the other way around. Wireless transmission to SPC software captures Ra, Rz, and other parameters without manual transcription.
Torque Analyzers and Force Gages — RS-232-equipped torque testers, force gages, and tension/compression analyzers used in assembly verification or incoming inspection. Data from these instruments feeds directly into SPC without operator entry.
Hardness Testers — Portable Rockwell, Brinell, and Vickers testers with RS-232 data output. Material verification at the workpiece rather than a fixed station makes wireless data collection relevant.
Profile Projectors and Optical Comparators — Legacy optical measurement equipment with RS-232 measurement outputs. Where replacement is not cost-justified, wireless data collection from RS-232 outputs extends the useful life of these instruments in a connected measurement system.
Coordinate Measuring Machine (CMM) Accessories — Some RS-232 peripheral devices and probing systems connected to CMM workflows output serial measurement data that can be routed into SPC or LIMS via the V2 module.
Sylvac Proximity Interface Gages — Calipers and other handheld gages using the Sylvac proximity interface — also sold under Fowler and Starrett brands — must use the RS-232 V2 Mobile Module. No baud rate configuration is required; the transmitter cable sets the correct serial parameters (4800-E-7-2) automatically.
If your RS-232 instrument is not listed here, contact MicroRidge with the make and model. With over 20 transmitter cable options including DB9 variants, compatibility is broad across the RS-232 instrument landscape.
Automated collection of RS-232 measurement data directly supports the data integrity requirements common to ISO 9001, IATF 16949, AS9100, and 21 CFR Part 820. These standards place explicit controls on measurement system reliability, data integrity, and traceability. Manual transcription of dimensional measurements from an RS-232 instrument display into a paper form or computer entry field is a documented nonconformance risk — it introduces transcription errors, omissions, and operator-to-operator variation that cannot be controlled through inspection alone. The RS-232 V2 Mobile Module eliminates manual entry as a process step, routing measurement data from the instrument directly into the host application.
The dual-LED per-reading confirmation provides operator-observable verification that data was both acquired from the gage and received by the Base — a closed-loop collection confirmation that can be observed, documented, and cited in audit responses. For facilities under IATF 16949 or AS9100 surveillance, the elimination of a manually transcribed measurement record is a substantive control point, not a convenience.
The RS-232 V2 Mobile Module requires initial configuration using the Xpress or Extended Setup Program. Unlike the Mini Mobile Module EVO, which can operate at factory defaults with only a pairing step, the RS-232 V2 Mobile Module must be configured with the correct baud rate and communication parameters to match the connected RS-232 device before it will correctly receive and transmit measurement data.
The RS-232 standard does not prescribe a single baud rate or framing format — different instruments operate at different settings (typically 1200, 2400, 4800, or 9600 baud, with varying parity, data bit, and stop bit configurations). Use the Xpress or Extended Setup Program to manually enter the baud rate and communication parameters documented in your instrument’s technical manual. The Xpress Setup Program covers the features required by most users. The Extended Setup Program is required for advanced configurations.
Exception: Sylvac proximity interface cables automatically configure the serial port to 4800-E-7-2. No baud rate or parameter setup is required for these devices.
RS-232 instruments — particularly specialty scales, balances, and multi-function measurement devices — frequently transmit more data than the measurement value alone. A single data packet may include units, timestamp, stability flag, measuring mode, gross and net weight fields, or other metadata alongside the dimensional value. Without filtering, all of that content passes through to the host application, requiring downstream parsing in the SPC software or creating nonconforming data entries.
The RS-232 V2 Mobile Module supports data parsing configured through the Extended Setup Program, allowing unwanted content to be stripped from the data packet before it is transmitted to the Base. Three parsing methods are available:
Match String — Searches each incoming data packet for a defined character string. When a connected RS-232 device sends multiple packet types — for example, a scale outputting both a gross weight packet and a net weight packet — Match String allows the module to identify and process only the target packet while discarding the rest. Setting “net” as the match string and configuring it to process matching packets passes only net weight data through to the Base, discarding gross weight packets entirely.
Character Positions — Targets a defined character range within a fixed-length data packet. Used when a single packet contains multiple data fields and only one is needed. For example, if a scale always outputs gross weight in characters 1–8 and net weight in characters 12–19, Character Positions can be set to pass only characters 12–19 to the Base, discarding the remainder of the packet.
Find First Numeric Field — Searches the data packet for the first numeric sequence exceeding three characters and passes that value through. This method can be further refined to require a decimal point in the target field, making it effective for isolating precision measurement values — which typically include a decimal — while discarding counts, timestamps, or other numeric content that does not represent a measurement.
Data parsing is configured via the Extended Setup Program prior to deployment and does not require reconfiguration at the point of use. For mixed-packet RS-232 devices, correct parsing configuration is a prerequisite for measurement data integrity and should be validated as part of initial system setup and MSA activities.
The RS-232 V2 Mobile Module communicates over MicroRidge’s proprietary RM2.4 protocol, operating in the 2.4 GHz ISM band with 32-bit encryption on all transmissions. RM2.4 was purpose-built for factory floor measurement data collection — prioritizing data integrity, RF noise resilience, and extended range in the high-interference environments where RS-232 instruments are frequently deployed: machine shops, assembly lines, and labs operating adjacent to welding equipment, VFDs, and dense Wi-Fi infrastructure. Bluetooth was designed for consumer electronics, not production environments. On a factory floor with welding equipment, VFDs, Wi-Fi infrastructure, and dozens of competing wireless devices, Bluetooth-based gage systems produce dropped readings, inconsistent range, and pairing failures. RM2.4 was purpose-built to solve those problems. See exactly how in Why Bluetooth Fails in Manufacturing.
Pairing is transmitter-driven: each V2 module stores the target Base’s unique identifiers and includes those identifiers in every transmitted packet. The Base processes only packets from paired transmitters. In facilities running multiple MobileCollect systems simultaneously, this eliminates cross-contamination between data streams regardless of physical proximity between Base units. Any hardware bearing the RM2.4 logo is compatible with any other RM2.4-capable device, across both Legacy and EVO product generations.
The RS-232 V2 Mobile Module includes two internal null modem jumpers that allow the transmit (TxD) and receive (RxD) data lines to be reversed without external adapters. This accommodates RS-232 instruments wired for DTE or DCE configurations that would otherwise require a null modem cable or adapter. Jumper position is changed inside the enclosure and requires removing the module cover. Default jumper positions maintain standard DTE wiring; reversing both jumpers enables null modem mode.
The RS-232 V2 Mobile Module uses a CR2 3V Photo Lithium battery — the same type found at camera and pharmacy retailers, available without ordering from MicroRidge. Battery life is variable and depends on the power behavior of the connected RS-232 instrument. Gages that require the serial port to remain powered continuously draw current even between readings, significantly reducing operating life relative to devices that only assert voltage when transmitting. Consult your gage documentation to determine whether the instrument requires a continuously powered serial interface. The V2 module powers off automatically after each transmission when the connected device allows it; instruments that hold the serial port active prevent idle power shutoff.
When battery voltage approaches end-of-life, the Gage Read LED blinks red 6 times following a successful reading. Replace the CR2 battery before this warning persists across consecutive readings.
If your RS-232 instrument is stationary and mobility is not a requirement, the RS-232 Remote is a USB-powered alternative that eliminates battery management entirely. For fixed bench-top or fixture-mounted RS-232 devices, the RS-232 Remote is the lower-maintenance choice.
The RS-232 V2 Mobile Module has two bi-color LEDs that provide per-reading confirmation for both sides of every data transaction:
Gage Read LED — Flashes red (~150 ms) when data is successfully received from the connected RS-232 device. Two red blinks indicate the gage read failed.
Host Accept LED — Flashes green (~150 ms) when the MobileCollect Base confirms receipt of the transmitted measurement. Five blinks indicate the Base did not acknowledge the transmission.
This confirmation loop gives the operator unambiguous feedback at both the gage acquisition and wireless receipt stages without requiring the operator to look at a screen. Full LED code reference — covering diagnostics, pairing status, low battery, and firmware update mode — is documented in the MobileCollect Hardware User’s Guide.
The RS-232 V2 Mobile Module supports three read modes configurable via the Xpress or Extended Setup Program:
Single — One reading per Read button press or instrument Send/Print button. Factory default.
Continuous — Readings captured at a defined interval. Used in sustained data capture applications such as dimensional trending during a machining run.
TIR (Total Indicator Runout) — Captures minimum, maximum, and TIR value across a measurement sweep. Used in runout, flatness, and form inspection applications.
RS-232 V2 firmware is field-upgradeable via MicroRidge’s firmware update utility, downloadable from the MicroRidge MobileCollect firmware updates page. The update utility is designed to prevent incorrect firmware from being loaded into any MobileCollect device. The update process involves placing the RS-232 V2 into Firmware Update Mode via a specific Setup/Read button sequence and completing the upload within the firmware update utility.
The RS-232 V2 is compatible with all MobileCollect Base Receivers. The following models are recommended for most deployments:
MicroBase EVO USB-A — Dongle-sized EVO Base that plugs directly into a USB-A port. Supports both USB Serial and Keyboard Wedge output modes. Ideal for mobile or tablet-based data collection setups.
MicroBase EVO USB-C — USB-C variant of the EVO MicroBase with the same Serial and Keyboard Wedge output capability. Compatible with modern laptops, tablets, and mobile devices.
EVO Wedge Base — Desktop Base Receiver with selectable USB Serial and USB Keyboard Wedge output. Outputs data as keystrokes directly into any active application — Excel, web-based SPC, Power BI, and others — without additional software. Recommended for stationary workstation deployments.
EVO RS-232 Base — Desktop Base Receiver with both USB Serial and DB9 RS-232 output ports. Well-suited for PLC-controlled systems and applications requiring native RS-232 connectivity.
The RS-232 V2 Mobile Module covers handheld and portable RS-232 instrument applications and is the correct starting point when your gage outputs full RS-232 voltage levels. For applications outside that scope, the following transmitters are available — and importantly, all MobileCollect transmitters can be paired to a single Base Receiver simultaneously, meaning any combination of the transmitters below can operate together as part of the same data collection system.
Mini Mobile Module EVO M3E — For digital output gages (Mitutoyo, Starrett, Mahr Federal, Fowler, CDI, and others). If your gage outputs via a proprietary data/clock interface rather than RS-232, the M3E is the correct transmitter. Supports 3,500+ devices across 30+ connector options.
Command Mobile Module — Use when your application requires the Base or host software to wirelessly trigger readings rather than the operator initiating them at the module. Supports the same digital gages as the M3E with the addition of wireless read commands, standby modes, and multi-module orchestration.
RS-232 Remote — Use when your RS-232 instrument is stationary and mobility is not required. The RS-232 Remote is USB-powered, eliminating battery management entirely. The appropriate choice for bench-top or fixture-mounted RS-232 devices at a fixed workstation.
Digital Remote — Use when your digital gage is stationary and requires remote read automation. USB-powered desktop transmitter for fixed measurement stations.
Does the RS-232 V2 Mobile Module include a transmitter cable?
— No. The transmitter cable is sold separately and is specific to your RS-232 instrument’s connector type and wiring. Contact MicroRidge to identify the correct cable for your gage.
What gages are compatible with the RS-232 V2 Mobile Module?
— The RS-232 V2 Mobile Module supports instruments that output full RS-232 voltage signals (typically ±5V to ±8V) — height gages, bench scales, surface roughness testers, torque analyzers, hardness testers, profile projectors, and other serial-output measurement instruments. It does not support digital output gages (Mitutoyo, CDI, Insize, etc.) or low-voltage Opto RS-232 gages (Fowler, Starrett, Sylvac Opto). Sylvac proximity interface gages are supported.
How is a reading initiated on the RS-232 V2 Mobile Module?
— Three ways: pressing the Read button on the module, pressing the Send or Print button on the connected RS-232 instrument, or by the instrument transmitting data automatically. The Read button can also be configured via the Xpress or Extended Setup Program to send a serial command string to the instrument, prompting it to output a measurement — useful for instruments that require a command to trigger a data send rather than a front-panel button.
Do I need setup software to use the RS-232 V2 Mobile Module?
— Yes. The RS-232 V2 Mobile Module requires configuration of baud rate and communication parameters before it will correctly receive data from the connected instrument. Both the Xpress and Extended Setup Programs support this configuration. The Xpress Setup Program covers the features required by most users. The Extended Setup Program is needed for advanced configurations.
How long does the battery last?
— Battery life varies based on the power behavior of the connected RS-232 instrument. Gages that require the serial port to remain powered continuously draw current between readings and will deplete the CR2 battery significantly faster than instruments that only assert voltage during transmission. The module provides a low-battery warning — 6 red LED blinks after a reading — when replacement is needed.
What wireless protocol does the RS-232 V2 Mobile Module use?
— The RM2.4 protocol operating in the 2.4 GHz ISM band with 32-bit encryption. RM2.4 was designed specifically for industrial measurement environments. For a detailed technical comparison against Bluetooth, see Why Bluetooth Fails in Manufacturing.
What is the Null Modem Jumper used for?
— The two internal null modem jumpers allow the TxD and RxD lines to be reversed, accommodating RS-232 instruments where the transmit/receive wiring differs from the standard DTE configuration. This eliminates the need for an external null modem adapter. Jumper reversal is performed inside the enclosure.
Does the RS-232 V2 Mobile Module support ISO 9001 and IATF 16949 measurement data collection requirements?
— The RS-232 V2 Mobile Module directly supports the measurement data integrity requirements of ISO 9001, IATF 16949, AS9100, and 21 CFR Part 820 by eliminating manual transcription as a process step. Automated serial data collection removes a documented source of nonconformance risk, and the dual-LED per-reading confirmation provides operator-observable verification of both gage acquisition and wireless receipt. Output format and data routing are configured through the MobileCollect Setup Programs to match the requirements of your host application or SPC system.
What are the physical dimensions and weight?
— 2.13″ × 1.44″ × 0.79″, 1.6 oz.
What are the operating environment limits?
— 32°F to 122°F (0°C to 50°C), up to 90% relative humidity non-condensing.
RS-232 V2 Mobile Module (MC-MM-V2) Specs | |
|---|---|
Part Number | MC-MM-V2 |
Dimensions | 2.13″ × 1.44″ × 0.79″ |
Weight | 1.6 oz |
Wireless Protocol | MicroRidge RM2.4, 2.4 GHz ISM band (2.4000–2.4835 GHz) |
Encryption | 32-bit |
Wireless Range | Up to 140 ft (40 m), line-of-sight indoors |
Compatible Gages | RS-232 devices |
Transmitter Connection | 12-pin male |
Transmitter Cable Options | 20+ options available including DB9 |
Baud Rates | 1200, 2400, 4800, 9600, 14.4k |
Communication Parameters | N-8-1, N-7-1, E-7-1, E-7-2, O-7-1, O-7-2 |
End-of-packet Character | CR (Carriage Return), Tab, LF (Line Feed) |
Read Modes | Single, Continuous, TIR |
Battery | CR2032 lithium coin cell, 3V |
Battery Life | Varies by RS-232 gage — devices that require the serial port to remain powered will draw higher current |
Buttons | Read + Setup; rated 1,000,000 cycles each |
LED Status Indicators | Gage Read (bi-color) + Host Accept (bi-color) |
Null Modem Jumpers | Yes — allows TxD/RxD reversal without adapters |
Output Format | Defined by MobileCollect Setup Programs |
Firmware | Field-upgradeable |
Operating Temperature | 32°F to 122°F |
Operating Humidity | ≤90% RH, non-condensing |
Certifications | FCC (ID: 2ACNQRM2), IC (12298A-RM2), CE, RoHS2, REACH |
Country of Origin | Designed & Made in the USA |
Base Receiver Compatibility | All MobileCollect RM2.4 Base Receiver models (Legacy and EVO) |
Gage Connector Included | No — order separately |
