HomeNumber of buttons3DimensionW54 x L54 x H11mmNet Weight20gColorBlackFrequency RangeFM 433MHzPower SourceDC 3V coin battery (CR2025)Battery LifeApprox. calling 40,000 timesAntenna TypePCB pattern antennaST 800-3BRM79.90PriceQuantityAdd to Cart