Transmitters with inputs for digital RH and temperature sensors

13E and 14E Series

GC13E / GD13E

Wired socket for 1 x RHT20E RH/T probe. This high specification RH and temperature probe can be placed precisely where needed.

'C' indicates standard case without display.

'D' indicates display.

GDM13E - with backup memory

The GenII M series retains the standard GenII transmitter specification and adds 12,000 readings of built-in backup memory. The memory is used in continuous overwrite mode. This means many weeks of data can be held in the transmitter, depending on the number of channels in use.

GD14E - with additional thermistor inputs

Wired socket for 1 x RHT20E RH/T probe and 2 x thermistor temperature probes (-40 to +70°C) with display.

LM14E Logmitter

The GenII Logmitter is a series of devices from Eltek that can be configured as a GenII transmitter or standalone datalogger.

Configured as a logger and deployed alone, it is ideal for smaller spaces and short term or temporary events in sites such as galleries or laboratories. For large buildings, e.g. city block museums, storage areas or research laboratories, it can be deployed as a transmitter alongside other GenII transmitters.




If you require sensors, please order them separately.


WBG Wall bracket docking kit

This kit enables fitment of the transmitter's built-in wall bracket to difficult or uneven surfaces. The kit provides additional docking security.

The following products are supported:

  • All GD, GC, GL and GS series transmitters
  • RP250GD repeater and RC250 receiver


Common GenII Transmitter Specification

RF specification: EN300-220
RF power: 10mW
Environment specification  
  Compliant to EN300-220: -10 to +55°C
  Actual: -30 to +65°C
  Humidity: 100% non condensing
Environmental rating: IP40
Dimensions (footprint): 78 x 41mm
Transmission interval range: 1 sec to 4 hours
Indicator (red LED): transmit active/on/off
Control switch (concealed): test mode / hibernate
Antenna socket: SMA

Transmitter Specification

Model(s) Sensors Range Resolution Accuracy
GC13E/GD13E external RH (RHT20E) 0-100% 0.1% ±1.5% (0 to 80%RH)
±2% (80 to 100%RH)
external temperature (RHT20E) -10 to +70°C 0.1°C ±0.1°C (+20 to +50°C)
±0.3°C (-20 to +70°C)
GD14E external RH (RHT20E) As GS13E
external temperature (RHT20E) As GS13E
2 x external thermistor temperature -40 to +70°C 0.1°C ±0.2°C (-15 to +40°C)
0.2°C ±0.4°C (-29 to +65°C)
0.3°C ±0.6°C (-36 to +70°C)
0.4°C ±0.8°C (-40 to -36°C)


Common to all transmitters

Gen II Quick Start Instructions

Specific to this family of transmitters


GenII M Series transmitters with backup memory
GenII Logmitter

User Instructions

RHT20E User Instructions
Using the EE08 RHT Probe with Gen II transmitters