Transmitters for tilt and crack measurement

Eltek has developed and field-tested the following solutions for monitoring tilt and crack using the GS44 transmitter and third party sensors:

GS44cfTLT Transmitter

  • 4 x inputs for Soil Instruments C12 inclinometers
  • Hardware range: ±2.5V
  • EU Range: ±3.000°
  • Resolution: 0.00075°
  • 12V sensor supply
  • 3 second sensor on (warmup) time


GS44cfLDT Transmitter

  • 4 x inputs for Penny & Giles SLS130 Linear displacement sensors
  • 0-5V single range for 0-50.000mm
  • Precision reference voltage for sensor: 5V
  • 1 second sensor on time


ODTLT/LDT Includes

  • Enclosure (200 x 120 x 88mm). Rated IP60. Suitable for wall mount or free stand.
  • GS44cfTLT / GS44cfLDT Transmitter
  • SP1196 9VDC 6 x D cell battery pack. Provides >1 year operation at 15 minute logging interval.



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


Common to all transmitters

Gen II Quick Start Instructions

Specific to this family of transmitters


User instructions for GS44cfLDT, Linear displacement

User instructions for GS44cfTLT, Tilt


GenII Systems for tilt and crack measurement