Plug-in modules are convenient add-on devices for relays which offer LED indication (for ease of viewing relay status from a distance), diode protection, RC circuits, bypass and timing facilities for all socket-mounted plug-in relays.
The modules simply plug into specific sockets to enhance the relays functionality.
Depending on module selected, they can provide;
Suppression of coil back emf on switch-off
LED indication to show when the coil in energized
Protection against reverse polarity applied across the coil terminals
By-pass of troublesome leakage currents in the coil circuit
Timer modules
Multi-function, multi-voltage timer module
Time range1s, 10s, 100s, 10m, 100m, 10hr, 100hr (adjustable)
Plugs directly into sockets converting standard relays into timing devices