Rain Sensor using optical technology.Install outdoor to detect rain, water or condensation. Robust and much longer lifespan compared to other resistive rain/water sensor.This is because our sensor does not have to worry about oxidization (electrode corrosion) which can degrade performance over a short period of time (especially in a humid tropical region like Singapore and Malaysia). Advantages Easy to maintain No moving mechanical parts. No oxidize problem. Simple to install. Power Supply Input (Voltage): 12 to 30Vdc or 12 to 26VacOutput Relay: Normally Open/Close (NO, NC), Max load 1AOperating Temperature Range: from -40 to 60°CThis product does not come with its own power adapter. The recommended power adapter is 230Vac to 12Vdc (0.5A or more). You can also share the power supply from your existing installation. The sensor accepts a wide range of voltage (12 to 30Vdc range) which allows you to easily tap from your existing power supply installed on site. This saves cost and simplifies your wiring.Notes: 1 Year Warranty and Local Technical Support for customer installing this product in Singapore.Check out more detailed information about this Rain Sensor can be found here.Also, check out rain sensor Singapore here. Note: The power supply is sold separately. Click here if you also need to add a power supply for your rain sensor.