PURPOSE: To obtain a camera controller capable of monitoring without disturbing mode setting by malfunction including mischief.

CONSTITUTION: A power supply switch 7 is set up for three positions, i.e., power supply OFF, power supply ON/non-lock and power supply ON/lock. A camera controller controlling part 1A sets up an input inhibiting mode when the switch 7 is set up to the power supply ON/lock position and resets the input inhibiting mode in the case of the power supply ON/non-lock position. Since only a specified person can switch the input inhibiting mode/reset mode and a monitoring mode can be prevented from being disturbed by malfunction including mischief, an remarkable effect for security can be expected.