Service and Maintenance

Follow Avatar Anthony Caplin
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 SuperCAT4+ and the T1 transmitter are designed to require minimal recalibration. However, as with all safety equipment, it is recommended that they are serviced and have their calibration validated at least once a year using Radiodetection approved test equipment. Radiodetection accepts no responsibility for service, calibration or repairs carried out by non-authorised persons.

To check when the SuperCAT4+ is next due to be calibrated, squeeze the trigger, then press the depth button until ‘C’ (Configuration) is displayed. The display will now automatically step through the following information: ‘S’ (software version), ‘D’ (day), ‘M’ (month) and ‘Y’ (year).

Functional test

Radiodetection recommends that you perform a daily functional test on your locator and transmitter before use.

  • Place the T1 on the ground, switch on and check for an audible sound. If no sound is heard, replace the batteries before use.
  • Switch on the locator by squeezing the trigger, checking for an initial ‘chirp.’ A low tone indicates low batteries. If no sound is heard, replace the batteries before use.
  • Rotate the locator function switch and check that the appropriate letter is displayed in each position of the switch.
  • Set the locator and transmitter to the same active frequency. With the locator in Active Line mode (L), set the sensitivity at its maximum gain, hold at waist height pointing toward the T1 with the flattest part of the housing parallel to the ground and check that the SuperCAT4+ can detect the T1 up to 15m away with a clearly audible sound.

Replacing batteries

Do not mix new and old batteries or different types of batteries, as this may cause them to overheat.


To replace batteries, open the access cover using a screwdriver or coin. Use two LR20 (D-cell) alkaline batteries or equivalent NiMH rechargeable batteries.


To replace batteries, Unscrew fastener on the rear panel and replace with four LR20 (D cells) alkaline batteries. Observe correct battery polarity as indicated on the top-panel label.