Frequency range: 402-470MHZCode number: 8 groupType of reception: wide-band fixed frequency orRate: 512bps, 1200bps, 2400 bpsSensitivity: -108DB @ 1200 bps-106DB @ 2400 bpsChannel spacing: 25 KHz or 12.5KHzFrequency deviation: ± 4.5 KHzStability: ± 10 PPMAdjacent channel selectivity: 55dBMirror interference Suppression: ≥ 52dBSpurious rejection: 55dBAlarm sound: 75dB @ 12 feetWeight: 110 g (with battery)Size: 105mm*16mmBattery type: rechargeable lithium-ion batteryOperating temperature:-10 ℃-50 ℃