The MET200 Reed Proximity Switch has 100Vac rated contacts and is designed for position or anit-tamper detection. The reed switch is encapsulated in a robust aluminium housing and has two 4mm holes for easy fixing. A special high power magnet type MET200MAG can also be supplied to give an operating distance of up to 35mm which is useful when fitting switches to wide openings or where movement may cause false triggering of alarm systems.