It configures controller parameters that include temperature, timing, and switching settings. It is designed for on/off cooling control from -40 to 100°F (-40 to 38°C), or heating control from -32 to 285°F (-36 to 140°C). In cooling mode, both units have a user-settable lockout time and minimum runtime. The 2699 model is designed for on/off temperature and humidity control and features up to three outputs with multiple relays, one at 30 A and two at 10 A.

Selco Products Co., 605 S. East St., Anaheim, CA 92805, (800) 257-3526,