1 - Line Voltage Tapping
2 - Relay #1 LED (marked "Relay 1")
3 - Relay #2 LED (marked "Relay 2")
4 - Line Voltage Connection Area
5 - Transmit/Receive Jumper ("TR/RC")
6 - SecureGround™ Ground Bond Screw
7 - Supply Conductors (from circuit breaker panel)
8 - PCB Line Voltage Conductor "Control Circuit"
9 - Low Voltage Ground Screw
10 - Security Lockout/Seal Loop
11 - Low Voltage Terminal Block
12 - Temperature Sensing Thermistor
13 - Low Voltage Connection Area
14 - Outside Temperature Indicator LED ("L3")
15 - PLC Signal Indicator LED ("L4")
16 - DIP Switches
17 - Line Voltage Terminal Block
18 - THER Jumpers – Must be ON for all Transceivers