Trumeter-7511-7511HV-Electronic-timers&-Operating-Hours-Meter-Trumeter-7511-P-A-compact-LCD-timer-designed-for-many-applications-The-timer-has-been-designed-with-screw-terminals-to-ensure-fast-wiring-Features-include-backlighting-external-5V-DC-supply-required-4-timing-modes-timing-direction-indication-&-9mm-high-digits-P-Trumeter-7511-Self-Powered-Operating-Hours-Meter