Voltage tester for 3rd-rail price on request Special voltage tester for testing covered busbars (3rd-rails) of subways up to 1000 V. Maintenance-free for life, without battery. Green LED for self-test in a dark environment.
Prüfball SPB analogue Very robust voltage tester with safetycasing made of solid rubber. With precise moving-iron instrument. Maintenance-free, without battery.