You searched for "timer function"
Muller
Muller Black Digital Desktop Timer 9 h 59 min 59.99 s
Part: TC 14.21
Desktop timer displays countdown up to 10 hours for office use.
Aoip Instrumentation
Aoip Instrumentation CALYS 50 Multi Function Calibrator, 20mA, 50V
Part: CALYS 50
Precision calibrator for adjusting electrical test meters and measurement instruments on site.
Aoip Instrumentation
Aoip Instrumentation CALYS 75 Multi Function Calibrator, 20mA, 50V
Part: CALYS 75
Portable multifunction calibrator for testing electrical instruments with voltage and current simulation.
Metrix
Metrix MX0531 Socket Tester, Loop Impedance Test Type Phase to Earth 400V ac, RCD Test Type Tripping test (pulse), RCD
Part: MX0531
Multi-function tester for socket, loop impedance and RCD circuit checks.
RS PRO
RS PRO Digital RCD Tester, RCD Test Type AC, RCD Test Current 10mA UKAS Calibration
Part: 123-2364
UKAS-certified RCD tester for verifying residual current device functionality in electrical installations.