SIREN MARINE Wireless Temperature Sensor, Siren 3 SeriesMonitor 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 or Plus, 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.Includes Wireless Sensor Module and Temperature Probe with 3 feet of wire.Please note: Mounting wireless sensors onto metal material (i.e. metal doors and walls) may obstruct connectivity to the Main Device.COMPATIBLE WITH THE SIREN 3 PRO AND PLUS ONLYSpecifications: Dimensions: 2.0 in x 2.7 in x 0.6 in Wireless Frequency: 900 MHz band Range: Up to 200 feet Battery: CR2430 Lithium Cell Battery Life: Up to 2 years Mounting: Mounting bracket with adhesive strip and mounting screws included Certifications: IP67 Waterproof, FCC, CE Warranty: 2-Year Limited Warranty