The energizing of CR1 enables a multivibrator circuit (14) connected via a relay driven transistor (Q3) to the coil (20A) of a relay (K1) located in a relay drive/relay circuit (20).

Provided is an input circuit, which corresponds to NPN open collector control, PNP open collector control and relay control, and which suppresses power consumption.

The control unit (20) includes a delayed cycle controller (21) which overrides the thermal relay (6) control and thus delays the activating of the boiler.

The energizing of CR1 enables a multivibrator circuit (14) connected via a relay driven transistor (Q3) to the coil (20A) of a relay (K1) located in a relay drive/relay circuit (20).

A voltage pulse controls the state of the low-current relay, and the low-current relay controls the state of the high-current relay.

The relay control module controls the first and second relays.

The control switch (3) is relay controlled.

A relay unit supplies or cuts off the commercial AC power supplied from the power unit according to the relay control signal generated by the control unit.

The control unit control the actuation of the relay.

The relays (15, 17) are controlled by a control section (19).

The electric control of the system is driven by a circuit consisting of three relais.

The relay is driven by the control signals provided by the central processing unit and amplified by the driver, and the action of a motor is controlled by the relay.

Provided is a control system capable of preventing relay attack damage.

The relay node then communicates with the mobile terminal based on the control performed by the control unit.

A relay control section controls conduction status of a plurality of relay switches arranged on a performance board.