Peco SP155-009 Commercial Thermostat Replaces X13510636010 BAYSENS006B Support your installed base. The number of UCM-based BAS systems in significant, representing one of the largest single installed bases in the industry. Choose the Peco SP155 Serieis and support this base with a wide variety of BAS sensors and controls from the BAS sensor expert - Peco. Application: Cooling or Gas/Electric packaged rooftops (2-25 ton) Description: This zone sensor module provides the following features and system control functions System control switch to select heating mode (HEAT), cooling mode (COOL), or to turn the system off (OFF). Fan control switch to select automatic fan operation while actively heating or cooling (AUTO), or continuous fan operation (ON). Temperature setpoint lever for setting desired temperatures Thermometer to indicate temperature in zone (has been factory calibrated). Dimensions: 2.75" W X 4.5" H X 1.2" D Wiring Terminals: 1, 2, 3, 4