Auto temperature compensation. 3-level sensitivity adjustment. Signal strength detection. Low battery alarm. Temperature measurement. Frequency hopping function and two-way communication technology ensure communication stability. Cloud update and automatic recovery from update failure Detection Range: 12 m Pet Immunity Level: ≤ 18 kg Carrier Frequency: 868.0 MHz–868.6 MHz Communication Distance: Up to 1600 m in an open space, Two-way Encryption Mode: AES128 Power Supply: CR123A battery Battery Life: 4 year Operating Temperature: –15 °C to +65 °C Product Dimensions: 104.0 mm × 60.0 mm × 50.0 mm Temperature Measuring Range: –15 °C to +65 °C