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How USB power and two-way wireless communication give fixed-station gages the trigger flexibility and process control that battery-powered transmitters can’t sustain.
Most discussions about wireless gage data collection focus on mobility — eliminating the cable between a handheld caliper and a PC so an operator can move freely around a workstation. That’s a legitimate problem worth solving, and MobileCollect handles it well.
But there’s a different problem that doesn’t get enough attention: stationary gages at fixed inspection stations that still require an operator to press a button to collect a measurement. Height gages, force gages, bench scales, digital indicators on comparator stands — these instruments are anchored to a workstation, and in many facilities they’re the last manual bottleneck in an otherwise controlled SPC data collection workflow.
The MobileCollect Digital Remote is built for exactly this application. It’s not a mobility solution. It’s a fixed-station automation solution — and the distinction matters.
The Digital Remote is a desktop wireless transmitter that connects a stationary digital gage to a MobileCollect Base Receiver. It transmits measurement data wirelessly to a Base, which delivers it to your SPC software or data collection application on a PC.
What sets the Digital Remote apart from other MobileCollect transmitters is its trigger architecture. Remotes are the most flexible trigger platform in the MobileCollect line — measurements can be initiated by a foot switch or hand switch connected directly to the Digital Remote at the instrument, by a foot switch or hand switch at the Base, or by a serial command from your SPC software, MES, or custom control system. All three paths are independent and can coexist within the same system.
The Digital Remote is also USB-powered via a USB adapter. That’s not a minor detail — it’s the design decision that makes sustained, automated, high-duty-cycle measurement collection possible without the maintenance overhead that affects battery-powered transmitters in permanent workstation deployments.
The Digital Remote connects to gages via a Digimatic 10-pin (Type D Male) connector — the same connector family used by the MicroRidge GageWay Pro wired interfaces, so gage cable inventory is shared across both product families. Supported gages include Mitutoyo, Mahr Federal, Fowler, Starrett, Sylvac, CDI, and other manufacturers with compatible digital outputs. On startup, the Digital Remote automatically identifies the connected gage type. No manual protocol configuration is required.
The Digital Remote communicates over MicroRidge’s proprietary RM2.4 protocol — purpose-built for industrial measurement environments where Wi-Fi infrastructure, welding equipment, and VFDs create RF conditions that cause dropped readings and pairing failures in Bluetooth-based systems. See why Bluetooth fails in manufacturing environments.
This is the capability that separates the Digital Remote and RS-232 Remote from every other transmitter in the MobileCollect system and from other wireless gage interfaces on the market.
A foot switch or hand switch connected to the 2.5mm read switch input on the Digital Remote’s rear panel gives the operator full hands-free control of the measurement sequence at the gage itself — without any involvement from the Base or host computer.
This is the right configuration when the operator needs both hands on the instrument or workpiece throughout the measurement. Available functions via the local switch include single read, continuous read (press-and-hold, or press-to-start/press-to-stop), TIR mode for runout and flatness applications, and a configurable reading count for continuous acquisition. All local switch functions are defined through the Extended Setup Program.
For applications where an operator is stationed at a height gage, CMM-adjacent inspection bench, or force gage workstation, this trigger path delivers a completely hands-free collection sequence with zero dependency on the Base for timing or control.
A foot switch or hand switch connected to the Base’s read switch port can trigger the Digital Remote remotely — appropriate when the operator is positioned at the Base rather than at the instrument, or when a single switch needs to trigger multiple Digital Remotes simultaneously. Available functions from the Base include single read on a specified channel, continuous read, TIR read, and a read-all command that triggers all paired Digital Remotes in a single actuation.
The Base accepts the full MobileCollect command set via its USB Serial or RS-232 port. SPC software, an MES, or a custom application can send serial commands to the Base to trigger reads on individual Digital Remote channels, trigger all active remotes, and manage configuration parameters — without any switch actuation.
This is where the automation story becomes most powerful. The software owns the timing of the measurement event. Readings can be triggered at defined intervals, at part completion, at production cycle events, or on any logic the control system supports. For IATF 16949 SPC compliance, this closes the loop between the statistical software and the measurement collection event — readings enter the SPC database at the moment of acquisition, without intermediate handling or operator-dependent timing.
It’s worth noting that software-initiated triggering requires the host application to send serial commands to the COM port assigned to the MobileCollect Base. SPC platforms and custom data acquisition applications with serial output capability support this directly. If your current software doesn’t have that capability, MicroRidge’s WedgeLink software can serve as an intermediary layer.
For PLC-controlled measurement applications, the RS-232 Base EVO outputs measurement data directly via its DB9 RS-232 port — no PC required in the data path. The PLC receives measurement data from any paired Digital Remote transmitter the same way it would from any other RS-232 serial device. Paired with an RS-232-to-Ethernet adapter, the Base can also integrate into networked PLC and SCADA architectures over existing plant infrastructure.
Two-way, software-initiated read triggering is also available via the Command Mobile Module — a battery-powered transmitter designed for portable gages that need remote command capability. It’s the right tool for mobile applications. For a stationary gage at a permanent workstation, the operational profile is different in ways that matter.
There’s also a key hardware distinction worth understanding: the Command Mobile Module supports local triggering via its Read button and compatible gage cable buttons, but it does not have a foot or hand switch input at the unit. If your application requires hands-free operator control at the instrument — both hands on the workpiece while a foot switch drives the measurement sequence — that capability exists only on the Digital Remote.
On power: a battery-powered transmitter at a permanent workstation creates a scheduled replacement obligation and a potential process nonconformance vector. Battery depletion mid-shift can compromise measurement record integrity if an operator continues recording without a live wireless transmission confirmation. In a high-duty-cycle automated polling application — software triggering a gage every 30 seconds across a full shift — that battery load is real and the failure risk is not theoretical.
The Digital Remote eliminates this variable. USB power means the Digital Remote is in its fully-powered operational state at the start of every shift, with no battery voltage to monitor and no replacement interval to track. The system runs as long as the station is powered.
To be precise about where this comparison applies: for handheld gages used by operators moving around a facility, the Mini Mobile Module M3’s battery architecture — a single CR2032 with best-in-class rated life — makes battery management a non-issue in normal handheld use. The battery advantage of the Digital Remote is specifically meaningful in the fixed-station, high-duty-cycle deployment context. These are different applications, and the right transmitter is determined by the workflow, not by battery spec in isolation.
Under ISO 9001 Clause 7.1.5 (Monitoring and Measuring Resources), IATF 16949, AS9100D, and 21 CFR Part 820 Section 820.72, the requirement extends beyond instrument calibration to control over the measurement process — including collection timing, data routing, and record integrity.
Operator-initiated measurement collection introduces sampling variation that is difficult to control and impossible to eliminate entirely. When the measurement event depends on an operator pressing a button, sample timing varies operator to operator, shift to shift, and workload to workload. That variation affects control chart data and can mask process signals.
Software-initiated triggering from the Digital Remote places measurement initiation under system control rather than operator discretion. Combined with automated data routing from gage to quality records, the measurement sequence becomes auditable, repeatable, and consistently timed across shifts and operators — without adding inspection labor and without the transcription errors and data integrity risks that manual measurement entry introduces. USB power removes battery failure as a process nonconformance source. Both characteristics support a measurement system that holds up under an MSA audit and produces reliable SPC data.
The Digital Remote supports the following measurement collection modes, configurable via the Extended Setup Program:
Single read — One trigger event produces one measurement. Default configuration. Appropriate for point-sample inspection.
Continuous read — The gage is sampled continuously until a stop event is received. Available in press-and-hold format or press-to-start/press-to-stop format, depending on whether the operator needs both hands free throughout the sweep.
TIR (Total Indicator Runout) — Used in combination with either continuous read mode. The Digital Remote tracks the full excursion across the measurement sweep and transmits the TIR value when the stop event is received. Used for runout, flatness, and comparative measurement applications.
Defined reading count — Continuous acquisition stops automatically after a specified number of readings, without requiring a second switch actuation.
The Digital Remote is the correct transmitter when the gage does not need to move. Applications include:
Multiple Digital Remotes can be paired to a single MobileCollect Base alongside Mobile Module transmitters, so Digital Remotes at fixed stations and Mini Mobile Modules or Command Mobile Modules on handheld gages can all operate on the same Base within the same measurement cell.
The MobileCollect system is designed so that different transmitter types can coexist on the same Base. The right choice is determined by the measurement workflow.
Mini Mobile Module M3 — Handheld digital gages, operator-initiated reads. Best-in-class CR2032 battery life for standard mobile measurement collection. No remote trigger capability.
Command Mobile Module — Handheld digital gages requiring software- or Base-initiated remote triggers. Battery-powered for portability. Local trigger via Read button and compatible gage cable buttons; no foot or hand switch input at the unit. Right choice when portability is a requirement.
Digital Remote — Stationary digital gages at fixed inspection stations. USB-powered. Full trigger flexibility including local foot/hand switch at the unit, Base-side switch, and host computer serial command. No battery to manage. Right choice when the gage doesn’t move.
RS-232 V2 Mobile Module — Portable RS-232 gages and serial devices requiring mobility. Battery-powered for handheld and mobile applications. The mobile counterpart to the RS-232 Remote — use when your RS-232 instrument needs to move with the operator.
RS-232 Remote — Stationary RS-232 instruments at fixed stations. Same USB-powered, two-way trigger architecture as the Digital Remote. For gages outputting full RS-232 voltage levels.
Not sure which transmitter fits your gage? The MobileCollect Selection Tool lets you filter by gage brand and model to confirm the correct transmitter and cable combination for your application.
The Digital Remote works with all MobileCollect Base Receivers. For applications using foot or hand switch control from the Base, full-size Bases are recommended — they provide read switch connectors and Reset buttons that support Pair-on-the-Fly and operational switch control.
Wedge Base EVO — Selectable USB Serial and USB Keyboard Wedge output. Recommended for workstations routing data into Excel, web-based SPC, or Power BI via keystroke output.
RS-232 Base EVO — USB Serial and DB9 RS-232 output. Well-suited for PLC-controlled systems and RS-232-to-Ethernet networked applications.
MicroBase EVO (USB-A / USB-C) — Dongle-sized bases with USB Serial and Keyboard Wedge output. MicroBases do not have read switch connectors, so Base-side triggering requires host computer serial commands. The local foot or hand switch at the Digital Remote itself remains fully functional regardless of which Base is used.
If your gage doesn’t move, the Digital Remote is the right transmitter. It’s the only MobileCollect transmitter that combines USB power, a local foot or hand switch input at the unit, and full two-way communication with the Base — giving you a fixed-station measurement node that your SPC software, MES, or PLC can trigger directly, at defined intervals, without operator involvement and without a battery to manage. For quality systems operating under ISO 9001, IATF 16949, AS9100D, or 21 CFR Part 820, that combination of controlled trigger timing, automated data routing, and continuous USB power directly supports a measurement process that is consistent, auditable, and verifiable across shifts. If you’re ready to eliminate the last manual step in your fixed-station measurement workflow, view the Digital Remote product page or contact MicroRidge at sales@microridge.com to confirm gage compatibility and cable selection for your application.
Riley Tronson is President and owner of MicroRidge Systems, a role held since 2023. Riley brings a strong technical foundation to leadership in measurement solutions. An experienced entrepreneur, Riley has founded and grown multiple software companies, including a venture focused on developing iPhone applications, blending engineering expertise with innovative product development.