ELK-M1ZTSR M1 Zone Temperature Interface with 7 foot Remote Probe Monitor high or low temperatures with this add-on remote sensor. Connects to any main zone on the M1 Gold (1-16) or M1EZ8 (1-8). Range is -50 to +140F. Applications include: freeze monitoring, second homes, agricultural uses, etc. Temperature may be accessed from keypad, telephone remote control, or rules. Sensor Probe can be located up to 7 ft away from the interface.