Accommodates pneumatic/electric or low voltage controls commonly used with BMS Systems Built in power on/off switch When using wall thermostat, separate thermostat wiring is required Automatic fan delay eliminates cold drafts on start-up and discharges residual heat from the heater body during shut down Multiple mounting options: recessed, surface or T-Bar Heavy duty 14-gauge louvered front cover grille with tamper-resistant screws