Power supply/wattage 110 - 230 V/50 -60 Hz, 0.6 W, protection class II Connecting cables - maximum diameter 1.5 mm2 Backup / recharge time min. 24 h/max 72 h Battery type BAT-3V2-CR2/LiFePo4 Warning: Battery is not installed Battery / lifetime 3.2 V; 470 mAh/3 years -- minimum voltage when loaded 3.0 V -- maximum voltage when unloaded 3.6 V Communication band 868.1 MHz, JABLOTRON protocol Communication range approx. 300 m (open area) Classification security grade 2/environmental class II -- According to EN 50131-1 -- Alarm sound level 100 dB/1 m (±5 dB/1 m) -- Back up power supply type W/24h back up -- Operational environment indoor general -- Operating temperature range -10 °C to +40 °C -- Average operational humidity 75 % RH, non-condensing -- Certification body Trezor Test s.r.o. (no. 3025) IP rating IP43 according to EN 50131-1 Dimensions 80 x 80 x 35 mm Also complies with ETSI EN 300 220, EN 50130-4+A1:2014, EN 55032:2015, EN 62368-1, EN 50131-5-3, EN 50581:2012, EN 50131-4, EN 50131-6 Can be operated according to ERC REC 70-03