2gig CO3 Wireless Carbon Monoxide Detector Type: Detector Specifications: Wireless Communication: 345 Mhz Wireless Range: Up to 300 feet line-of-sight Electrical: Battery, one 3V lithium (CR123A) included Battery Life: 2 years (normal use) Audible Signal: 85 dB at 10 feet Color: White Case: Tamper protected Operating Temperature: 40 to 100 F (4.4 to 37.8 C) Relative Humidity: 15-90% non-condensing Weight: Weight: 7.09 oz (201 g) Protocol: Z-Wave Type: Smoke / CO / Gas