GSE Water Timer Overview Consistent, accurate timing of irrigation or nutrient solution pumps is essential to growing a successful crop. This timer is ideal for scheduled Ebb & Flow systems, dripper systems or NFT systems. The pump ON time and the Interval time can be set separately for day and night irrigation. The unit comes complete in a waterproof housing, with hinged lid covering the socket, and has an IP rating of 44. Connection to a pump is easy via compatible mains sockets and the timer has a built in light sensor with 4m low voltage cable which detects day/night-time; making it the perfect controller for humid rooms. All G.S.E products are engineered and manufactured in Europe, and are available exclusively from Growth Technology retailers.