Specification
ItemSpecificationRated voltageDC 3VOperating voltageDC 2.7V ~ 3.3VOperating temperature-20°C ~ +60°C (-4°F ~ +140°F)RF ModulationFSKLF ModulationASKRF frequency433.92 MHzBatteryCR2032 (3V / 1EA)Transmissible distance30m or moreBattery lifetime2 years or more (at 20 times per d ...