AMR STM

American Mine Research

About this app

AMR STM connects your phone to an American Mine Research STM-118 Smart Transformer Monitor over Bluetooth Low Energy, so you can commission, configure and watch a transformer monitor without opening the enclosure or carrying a laptop.

LIVE DATA STREAM
- Current and peak temperature for every thermocouple channel, fan and heater current, and board temperature
- Relay states, thermocouple faults (open, bad connection, shorted), fan faults and device alerts, refreshed every few seconds
- Rolling graphs with a selectable time window and CSV export through the Android share sheet

CONFIGURATION
- Alarm, trip, fan and heater thresholds with deadbands
- Thermocouple type and channel enable
- Spare outputs and 4-20 mA analog output source
- Fan bank, heater and current-fault settings
- Modbus serial settings and device address
- Custom names for channels and outputs

CONNECTIVITY
- Scans for nearby STM-118 units and remembers the ones you have used
- Automatic reconnect if the link drops, with a clear status on screen

DEMO MODE
Tap Demo on the device list to explore every screen with a simulated monitor. No hardware is required.

This app is intended for installers and maintenance staff working with AMR STM-118 hardware. A compatible STM-118 unit is required for live operation.

What’s new

First Google Play release.
- Live data stream shows relay states, thermocouple faults (open, bad connection, shorted), fan faults and device alerts
- Rotating the phone no longer drops the Bluetooth connection
- Demo mode for exploring the app without hardware
- Updated for Android 16