Product details:

Zone control kits and panelszone control kit, 4 zone forced air, voltage 24 ac, height 13 1/2 in, width 8 in, depth 2 in, output amps 10 va, connection push-button terminals, terminal designations four of m1, m4, m6, r, c, w1/e, w2, w3, y1, y2, g, o/b, l one of rh, rc, w1/e, w2, w3, y1, y2, g, o, b, ds/bk, r, c, az1, az2, ot, dats, ambient temp range -20 to 150, power method 24 vac, color gray, application controls air flow in heating and cooling systems, requires 3 heat, 2 cool thermostat, includes discharge air temperature sensor, transformer.