Horstmann Radio Telemeter Series 2a User Manual May 2026

2A-UM-EN-2024-09 Last updated: September 2024 Supersedes all previous editions.

Keep this manual with the equipment at all times. Before disposing of the unit, remove the battery and recycle responsibly. horstmann radio telemeter series 2a user manual

| LED State | Meaning | |-----------|---------| | | Powered on, no active transmission, idle mode | | Flashing Green (1Hz) | Normal operation – sampling inputs, no alarm | | Flashing Amber | Transmitting data packet – radio burst active | | Flashing Red (fast) | Low battery or input over-range alarm | | Solid Red | Critical fault (internal memory corruption or radio PLL unlock) | 2.2 I/O Terminal Block (Internal) Remove the four corner screws to access the terminal block. Do not open in a wet or explosive environment. | LED State | Meaning | |-----------|---------| |