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Low Voltage / Dry Contact Sensor (ELV2)

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Model: ELV2

Requires the eGauge Sensor Hub and eGauge model EG4xxx (Pro or Core), not compatible with older model units.

Analog sensors require ≤ 50Ω output.

Only use straight-through RJ-11 cables to connect powered sensors to the Sensor Hub. Telephone systems generally use "reverse" style RJ-11 cables which are incompatible with the Sensor Hub. See this article for more information on verifying the correct RJ-11 wiring. Every Sensor Hub compatible sensor sold by eGauge Systems comes with a straight-through RJ-11 cable.

The eGauge 2V Analog Input is used in conjunction with the Sensor Hub and an EG4xxx model meter (Core or Pro) which allows EG4xxx meters to read 0 -- 2V low-impedance analog values or states from standard 2-wire dry contacts such as relays.

See our Sensors product introduction video here.

2v-sensor-1000x941-transparent.png pulse-topdown.png sensor-rj11.png
Side view of ELV2 Front view of ELV2 with connections Back-side of ELV2 with RJ-11 port and CTid locator LED


Full specs (data-sheet PDF)

CAD file (STEP format)

  • CTid Enabled (w/ auto-configure and locator LED)
  • Compatible with
    • 2-wire dry contact or relay
    • 0 to 2 volt analog output sensors with ≤ 50Ω impedance
  • 4.7 kΩ pull-up resistor between Signal and 2V
  • Signal pin: open- 2V; closed- 0V
  • -30 °C to 70 °C
  • Humidity range: Up to 80%
  • Extruded aluminum Case
  • 26 x 26 x 40 (mm), 1.02 x 1.02 x 1.57 (in.)
  • 7' RJ-11 cable for Sensor to Sensor Hub
  • 47 CFR Part 15, Subpart B – Unintentional Radiators, Class B for Home or
    Commercial use
  • US Patent # 10560763
  • 2-year limited warranty

Hardware included

  • 1x eGauge Low Voltage Sensor
  • 1x 3-pin input plug
  • 1x 7’ RJ-11 cable for connection to Sensor Hub

Assembly/installation information

  1. It is not advisable to extend the RJ11 leads from the Sensor to Sensor Hub. It is acceptable to use a longer RJ45 cable from the Sensor Hub to the eGauge.
  2. If RJ11 cable between Sensor and Sensor Hub must be extended, it is advisable to use twisted pair wires, such as a CAT5 cable with RJ11 plugs (most commonly used for DSL modems).
  3. If terminating own cables, both RJ11 and RJ45 cables should be straight-through cables, with the same color order on both ends.
  1. Install the sensors and Sensor Hub.
  2. Connect the ELV2 to the 0-2V sensor output using the signal and ground ports on the ELV2. The 5V pin is unused.
  3. Configure the sensors.



    2-Wire dry contact or relay


    2 volt analog sensor


    Typical Setup Overview