Transceiver Module Attach 1 double sided tape 2 Install on wall ow to fix using screws Water Probe How wo fix 1 Attach double sided tape using screws RAE {Transceiver Module) |= minim, Wes 89.75mm, H= 104mm Dimensions {Water Probe) L= 142mm, W= 43 6mm, H= 10.87min Power source CR2450(3V) Lithium Battery Tex Battery Lifetime Sears st 75 C77), typical, Indoor lies Operating Temperature 0°C ~ 50°C.