The OleumTech® OTC Wireless RTD Temperature Transmitters are ideal for monitoring air, gas, water, or liquid temperatures. The SM-RTM provides a junction box and wiring terminal board for accepting a third-party 2, 3, or 4-wire RTD sensors. The temperature output can be reported in Fahrenheit, Celsius, or both. These ultra-low-powered transmitters are powered by replaceable battery packs that provide up to a 10-year life.