Description: The sensor USES the high quality FR - 04 double material, treatment of nickel plating and surface, have fight oxidation, electrical conductivity, and life has more performance With potentiometer sensitivity adjustment The output format: digital switch output (0 and 1) and analog AO voltage output Has a fixed bolt hole, convenient installation The comparator output, signal clean, good waveform, driving ability is strong, for more than 15 mA. Specification: Material: Plastic Size: 50 x 40mm / 1.97 x 1.57inch The LM393, use of wide voltage comparator Working voltage: 3.3-5V Package Includes: 1x Rain Sensor 1x Rain Module 2x Cable Note: Usage: -Connected to 5 v power supply power lights, no water droplets on induction plate, the DO output for the high level, switch lights out, a drop of water drops, the DO output for the low level, switch indicator,brush away the water droplets, return to again, the output high level state. -AO analog output, can be connected to the microcontroller AD mouth drops of rainfall in the above size. -DO TTL digital output can also be connected microcontroller detecting whether it will rain.