... Alloy+Plastic 3.copy face to face 4 buttons wireless remote control copy code with key Learining face to ... ) is used for stabilizing frequency, It is applied for wireless alarms, wireless controlling devices,etc.Using High stability, SMT components, SAW ... Working temperature -50°C~+80°CUse range Home alarm, car alarms, industrial control, motorcycle alarm system, car alarm system, auto gate, motor and ...