The Rain-O-Matic A simple and inexpensive rainfall collector with a switch to indicate presence of rainfall, allowing the sensor to distinguish between background noise and rainfall. The Rain-O-Matic provides 2.54mm level per switch actuation with an accuracy level of two per cent.

 

 

The RM Young 52202 This high quality rainfall measurement sensor consists of a large collection area (200cm2) and two tipping buckets with a switch. The sensor is designed to be self-cleaning, has levelling screws built in and is available with or without a heater. WMO standard resolution of 0.1mm per switch actuation.