System Sensor 5251RB Rate-of-Rise Thermal Detector Mircom MIX-M500X This detector-type is commonly found

This detector-type is commonly found on the following Siemens – Fire Safety fire alarm control panels: TXR-320

These devices operate in a grouped fashion

NCM-W port-to-port wiring is not polarity sensitive

Please refer to the APS2-6R manual for more information

as well as first-generation NCA Network Control Annunciators

System Sensor 5251RB Rate-of-Rise Thermal Detector Mircom MIX-M500X This detector-type is commonly foundSystem Sensor 5251RB is a rate of rise temperature sensor with 135F fixed temperature alarm. The model 5251RB System Sensor is intelligent sensor that utilize a state of the art thermistor sensing circuit for a fast response. These sensors are designed to provide open area protection with a 50 foot spacing capability. Model 5251B is a fixed temperature sensor with a 135F fixed temperature alarm. Model 5251RB System Sensor is a rate of rise temperature