This simple board contains four 24V DC relays, which can be used for any extra low voltage switching applications.
Each relay has two changeover contacts, and an LED indicator to show when the coil is energised. The coils of the relays are commoned to the positive supply and the relays can be operated individually by switching a negative to the numbered coil inputs.
The contacts are suitable for switching a maximum of 30V DC and 2 Amps. Voltages or currents that exceed these values should not be connected under any circumstances. The current consumption of the unit when operated from a 24V supply is approximately 25mA per relay.
The PCB has four 4mm mounting holes, which will accept the self adhesive standoffs supplied. The use of self adhesive standoffs should be carefully considered however due to their tendency to become detached over a period of time and a more permanent fixing method is recommended.
