Description
The Schneider Electric (Barber Colman) AM-708 is a precision 500 Ohm resistor designed to convert a 4 to 20mA current signal into a 2 to 10Vdc voltage signal. This straightforward, reliable signal conversion component is an essential interface device for building automation and direct digital control (DDC) systems where current-output devices must communicate with voltage-input controllers.
Overview
In modern HVAC and building automation applications, sensors, transmitters, and controllers often operate on different signal types. The AM-708 bridges this gap by accepting a standard 4–20mA current loop signal and producing a corresponding 2–10Vdc output, enabling seamless integration between field devices and control panels without the need for active signal conditioners or external power supplies.
Key Features
- 500 Ohm precision resistor for accurate signal conversion
- Converts 4 to 20mA input signal to a 2 to 10Vdc output signal
- 9″ overall length for flexible installation in control panels and junction boxes
- Passive design — no external power supply required
- Compatible with standard building automation and DDC control systems
- Manufactured by Schneider Electric, formerly Barber Colman
Specifications
- SKU: AM-708
- Resistance: 500 Ohm
- Input Signal: 4 to 20mA
- Output Signal: 2 to 10Vdc
- Length: 9″
- Brand: Schneider Electric (Barber Colman)
Applications
- Building automation systems (BAS)
- Direct digital control (DDC) panels
- HVAC control system signal interfacing
- Integration of current-output transmitters with voltage-input controllers
- Commercial and industrial HVAC controls
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