Magnasphere's MSS concealed style security sensors installs in fail safe mode and is available in 3/4", 1", and 2.5" sizes.
Magnasphere's T1-AB-JS industrial grade non-mercury sealed unidirectional tilt switch is RoHS compliant and requires no standby power consumption.
Magnasphere's omnidirectional tilt switch is RoHS compliant, chemically inert, and sealed from atmosphere and water.
The L-series from Magnasphere offers remarkable ferrous-metal proximity sensing. Unlike typical reed switch devices, they need no magnet actuator.