The TORK EWZ201C-MB 7-Day Astronomic Digital Timer is designed for 120-277 volt loads and comes with a mounting bracket, rather than the typical enclosure. Automate your home or office to save energy and money using the intuitive programming interface to turn on lights or signage with 32 On/OFF set points and up to 20 holiday blocks. the software interface to choose between 2 variable SPST channels or 1 DPST channel. This unit can also be configured for single channel momentary operation with a simple jumper change. Designed for commercial applications including outdoor lighting, motors, security or parking lot lights, and heating or air conditioning equipment.