Aprilaire 3-Wire to 4-Wire Adaptor allows you to combine any two thermostat equipment terminals without the need for extra wiring.
Combine any two thermostat equipment terminals (not 24V hot or common) using the Aprilaire 3-Wire to 4-Wire Adaptor. The adaptor includes a diode pair that connects the two terminals and relays their signals through one wire to the adaptor's circuit board. This eliminates the need for an extra wire.
- Bypassing a broken wire inside the wall
- Adding an extra heating/cooling stage
- Upgrading a mechanical or battery-operated thermostat to a 24 volt or power stealing Aprilaire Electronic Thermostat
The circuit board of the Aprilaire 3-Wire to 4-Wire Adaptor mounts inside of your equipment where other control components are located, and the diode pair mounts to the thermostat.
- Circuit Board
- Diode Pair
- Wire Nut
NOTE: Requires #8 sheet metal screws (not included).
- Voltage: 24VAC Class 2
- Current: 3.2A
- Dimensions: 2-3/8(H) x 3-7/8(W) x 1-1/4(D) inches