Magnetic contact switch (door sensor) 4 Channel pico expander Up to10m communication distance in

Up to10m communication distance in house without obstacle

Description

Accuracy of 1PPS Signal: < 100 ns

Can run motors on 4

Magnetic contact switch (door sensor) 4 Channel pico expander Up to10m communication distance inDescription This sensor is essentially a reed switch, encased in an ABS plastic shell. Normally the reed is 'open' (no connection between the two wires). The other half is a magnet. When the magnet is less than 13mm (0. 5") away, the reed switch closes. They're often used to detect when a door or drawer is open, which is why they have mounting tabs and screws. You can also pick up some double sided foam tape from a hardware store to mount these, that