Temp Sensor for Siren 3Monitor the temperature of the cabin, engine room, bait locker, or fridge. Place the Wireless Module in the area that needs to be monitored, link the module to the Siren 3 Pro, and receive alerts if the temperature exceeds or drops below a preset level. The optional temperature probe can be used for measuring the temperature of specific equipment (e.g. engine) or hard-to-reach areas of the boat.Features:. Compatible with Siren 3 Pro only. Includes: Wireless Sensor Module and Temperature Probe with 3 feet of wire