Figure 1. HMT140 Components Diagram 1 CONFIG header 2 SERVICE button 3 Infrared sensor 4 Status LED 5 LCD 6 Power switch for battery 7 Cable grommet (rubber plug) 8 Cable gland 9 Channel wire terminals Figure 2. RTD Wiring Diagram Figure 3. RTD and Boolean Wiring Diagram Figure 4. Boolean Wiring Diagram Figure 5. Voltage Wiring Diagram Figure 6. Current Wiring Diagram