The Latching Series comes prepackaged in their own NEMA 1 plastic enclosure with a 1/2" mounting nipple, LED indicator and pre-wired for a money-saving installation that is easy and quick. These relays are activated by pulse commands from a controller or momentary switch closure. The relay contacts are mechanically latched in the closed position and the load will remain on in the event of a control panel failure period. If power is completely lost the contacts will remain in their last state and the load will activate upon the return of normal power or emergency power.

Mounting options include plastic track for snap-mounting circuit boards. One style of track can be mounted to the back surface of any cabinet and is available in 4.00" or 2.75" widths. Another style of track, AdapTrack®, snap onto any of the three most popular DIN rails. In turn, it can accommodate a 4.00" wide circuit board.

Temperature range: 40°F to 130°F Class B insulation Continuous duty UL and CSA approved Compatibility Mars: 19004 White-Rodgers: 90-65

2.75" Track Mount 2 Output I/O Expander with 24 Vac/dc Power Input and 0-10 Vdc / 0-5 Vdc Control Input. Great for staging loads such as chillers, pumps, actuators, or multi-stage heating.

2.75" Track Mount 4 Output Field Adjustable Staging Threshold Relay Module with 24 Vac/dc Power Input and 0-10 Vdc Control Input. Control four relay outputs with one (0-10 Vdc) analog signal from controller or thermostat. Has the capability to set desired ON and OFF voltages for each relay. Has no pots to adjust. No need for volt meter for setup. On board field selectabledigital display.