WAM 2/4

WAM 2/4
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WAM 2/4

WAM 2/4


Wire Adder Module (WAM2/4) Atkinson Electronics

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Atkinson Electronics Thermostat Wire Adder Module (WAM2/4)

Quick Product Overview

The WAM2/4 allows HVAC contractors to reuse the existing 2-wire thermostat cable on air conditioning and furnace retrofits where installing a 4-wire cable would be required.

The WAM2/4 re-uses the existing 2-wire cable instead of needing a new 4-wire cable for Htg/Clg Retrofits. It mounts in the furnace control box, gets it’s power from the existing 24V AC transformer and puts out “heat”, “cool”, and “fan” relay contact closures simultaneously with the heating/cooling thermostat operation. The new Htg/Clg thermostat should be the battery powered electronic type. The conventional switch action thermostat has heating and cooling anticipators which will have their action bypassed, which could cause wide temperature swings.

Product Specifications

  • SIZE: 3.20"L x 1.20"W x 0.85" H
  • MOUNTING: Double stick tape or 1" #6 sheet metal screw
  • POWER: 24V AC 6 15%, 50/60Hz .5VA
  • INPUT SIGNAL: DC Voltage from 4 wire combining network
    • Switched 24VAC for:  Fan, heat, & cooling
    • Relay contacts rated for: 1 Amp @120VAC
  • AMBIENT TEMP: 0-508C

Product Literature

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Item DescriptionWire Adders
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