TDL 4RB – 4 Way Relay Board

4 Way 8 Amp Power Relay Board The 4 Way 8 Amp Relay Board has 4 x 12Vdc inputs that switch 4 x 8 amp single pole double throw relays. Each set of two relays can be switched from different power supplies and if only two relays are required, the board can be split into two. This unit also fits on the TDL Mounting Base system to ensure a neat and tidy installation.


  • Contacts rated at 8 Amps AC/DC
  • Fits TDL-MB Modular unit that can be used to switch a number of devices
  • Designed to be used as an interface between a low current switching control board and a high powered lock
  • LED’s to indicate relay status
  • Raising clamp type terminals will not damage cables and can accommodate up to a 2.5mm2 cable


  • Four way Relay Board
  • Operating Voltage 9 to 16Vdc - 38mA at 13.6 Vdc per relay
  • 12Vdc negative trigger inputs
  • Four Single Pole Double Throw relays
  • Contacts rated at 8 Amps AC/DC
  • Dimensions: 110mm (w) x 60mm (h) x 23mm (d)
TDL 4RB – 4 Way Relay Board