868 MHz two-way wireless communication,Battery type: 12 V 7 Ah,150 × 64 × 94 mm With two 12 V power outputs, can be used to power up external wired detectors,Battery Supply: Quiescent current (50 mA), Max current (1500 mA), Voltage (13.8 V)220 V Supply: Quiescent current (45 mA), Max current (300 mA), Voltage (220 V), Battery life span Up to 36 hours, RF modulation 2GFSK , RF distance 1100 m, Operation temperature –10 to 40°C,Dimension:261 × 199 × 86.4 mm, Plastic Color White: Weight 975 g (without battery)