LRSSR2x_USB Reactor Relay 2-Channel Solid State + 8-Channel 8-Bit A/D with USB Interface USB Interface Reactor Series $129.00 Full Description> LRSSR2x_ZBMESH Reactor Relay 2-Channel Solid State + 8-Channel 8-Bit A/D with ZB ZigBee Interface ZigBee Interface Range: 300 ft. to 1 mi. Reactor Series $118.00 Full Description> LRSSR2x_ZBMESH_MIX Reactor Relay 2-Channel Solid State Mix + 8-Channel 8-Bit A/D with ZB ZigBee Interface ZigBee Interface Range: 300 ft. to 1 mi. Reactor Series $118.00 Full Description>