Features: The sensor is made of quality FR-04double-sided material, with a super large area of 5.0*4.0CM, and the surface is treated with nickel plating, which has superior performance in anti-oxidation, electrical conductivity and service life The module is directly equipped with high-power relay to directly control the load Equipped with potentiometer to adjustment sensitivity, and control the opening of the relay in different water The products are made of high-quality materials, which can effectively avoid corrosion and wear and are durable for use Professional chip sets provide excellent performance in the system Specification: Module power supply: 12V static current: 5-12mA Load capacity of relay: 250V 10A (AC) 30V 10A (DC) Size: 5*2.5*1.5cm/2*1*0.6in Weight: Approx.25g/0.9oz Use method: Connect to the power supply, the power indicator light is on, when there is water drop on the induction board, the relay absorbs, starts the relevant equipment, the switch indicator light is on, drop a drop of water, the relay is off, the switch indicator light is not on Package list: 1 x Relay module 1 x Raindrop sensor panel 2 x 20cm cable