The 12Vdc powered RLB8 relay board from Tactical Power Products features a strip of eight (8) individual dual buffered, Single Pole / Double Throw (SPDT) Relays which share a common power rail. Relays may be separated from the strip for individual or group use. Each relay features a transistor buffered input which may be triggered by any positive DC voltage over 5Vdc or by 0Vdc. (Inputs are provided for + or – trigger) An onboard LED illuminates when the relay is  activated.