The RLB1-DPDT is a 12v DC powered buffered relay board. The relay features dual transistor buffered inputs which may be triggered by a positive DC voltage between 5Vdc to 24Vdc or by 0Vdc. (Inputs are provided for + or – trigger). The relay contacts may be programmed via a jumper header  for each relay pole (DPDT=2 Poles) By setting this link, either +ve or -ve may be jumpered to the common of either relay pole.  

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