TIMERS, NAMELY, HOUR METERS, TWO-TARIFF TIMING DIALS, INFORMATION DISPLAYS, NAMELY LIQUID CRYSTAL DISPLAYS AND LIGHT EMITTING DIODE DISPLAYS, SOLENOID VALVES, ELECTRIC RELAYS, ELECTRIC PRESSURE SWITCHES, OIL SWITCHES, ELECTROMAGNETIC SOLENOID VALVES, ELECTRIC VALVE ACTUATORS, TEMPERATURE INDICATORS, TEMPERATURE SENSORS