Read-write device for realizing automatic switching of water meter interface

The utility model discloses a read-write device capable of realizing automatic switching of a water meter interface, which comprises a device body provided with a control mainboard; the communication transmitting end is arranged on the device body, the communication transmitting end corresponds to a signal receiving end of the ultrasonic water meter, and the communication transmitting end is electrically connected with the control mainboard; the communication receiving end is arranged on the device body, the communication receiving end corresponds to a signal transmitting end of the ultrasonic water meter, and the communication receiving end is electrically connected with the control mainboard; the light-emitting element is electrically connected with the control mainboard, the control mainboard is at least used for controlling the brightness of the light-emitting element, the light-emitting element is arranged corresponding to a light sensing component of the ultrasonic water meter, the water meter detection