Altronix RBST — compact DPDT relay module with a coil selectable for 6, 12 or 24 VDC.It is an interposing relay: it takes a low-current output a panel can drive and switches a circuit the panel cannot. Altronix draws four arrangements on the installation sheet — dry contacts from a bell output, polarity reversal, latching dry contacts through trip and reset switches, and telephone line seizure. The board arrives set for 6 VDC; cut J2 for 12 VDC or J1 for 24 VDC. Coil 6, 12 or 24 VDC selectable; current draw 30 mA DPDT contacts rated 1 A at 120 VAC or 2 A at 28 VDC Board 2.75 × 2 × 1 in. (69.85 × 50.8 × 25.4 mm), 0.15 lb Operating temperature -25 to 55 °C (-13 to 131 °F); storage -20 to 70 °C Relative humidity 85 percent plus or minus 5 percent; continuous duty The near siblings differ on coil and on contacts, so read the row: RBSN is 12 or 24 VDC at 15 mA and RBSNTTL adds a 3 to 24 VDC isolated trigger at 45 mA, both on the same 1 A DPDT contacts. RB5 and RB1224 are the 5 A at 220 VAC versions, RB30 is 30 A SPDT. The 6 VDC option is what separates this part from RBSN and RBSNTTL.
