Test Equipment
TS-421
The handheld TS-421 Test Set is now available as the replacement for the TS-420. The original functions of the TS-420 are retained (Voltmeter with selectable resistive load bank for battery checks and a regulated 5V power supply with a timed ammeter for lighting system checks), but with significant improvements including
• Touchscreen user interface with full color displays
• Enhanced Ni-MH rechargeable battery and test output up to 3 Amps
• Removable protective cover
• Calibration without opening the instrument
TS-420
Our original TS-420 Test Set became the standard for escape slide lighting test and maintenance by the early 2000’s and is still in use in maintenance and repair shops (MROs) around the world. Obsolescence of many of the electronic components comprising the device forced it out of production in 2023. We continue to repair and calibrate these instruments for as long as possible
Operating and Calibration Manuals covering all of the specialty handheld set tests that we have developed for special escape slide programs are listed in the Resources section with direct links to current editions.