Abstract: A switch control circuit and a switch control system includes a plurality of parallel-connected signal processing units. A first voltage signal and second voltage signal control turning-on and turning-off of the first controllable switch, and converting the first voltage signal into a third voltage signal; and the third voltage signal being connected with the first port of the controller; and the controller, configured to send a switch control instruction to a to-be-controlled terminal based on the third voltage signal. This circuit converts a electrical signal of a high voltage in strong electricity into a stable electrical signal of a low voltage in weak electricity, implements multiplex switch control in conjunction with the controller, and only processes voltage signals in the whole circuit, thereby avoiding processing signals of a plurality of types, and guaranteeing the reliability of the multiplex switch control.

Abstract: A dimming circuit and a lighting device includes a signal processing unit having a first controllable switch connected to a to-be-processed dimming signal, a first port of a controller, and a first voltage signal; the to-be-processed dimming signal and the first voltage signal controlling turning-on/off the first controllable switch, the to-be-processed dimming signal being converted into a second voltage signal, and outputted from the second terminal to the controller; and the controller, extracting a corresponding dimming control signal based on change of the second voltage signal, and outputting the dimming control signal to a to-be-dimmed terminal. This circuit converts a electrical signal implements dimming control in conjunction with the controller, and the controller only processes weak electrical signals, thereby guaranteeing the reliability of the output voltage of the dimming circuit, and preventing the output voltage of the dimming circuit from harming the to-be-dimmed terminal.

Abstract: A switch control circuit and a switch control system includes a plurality of parallel-connected signal processing units. A first voltage signal and second voltage signal control turning-on and turning-off of the first controllable switch, and converting the first voltage signal into a third voltage signal; and the third voltage signal being connected with the first port of the controller; and the controller, configured to send a switch control instruction to a to-be-controlled terminal based on the third voltage signal. This circuit converts a electrical signal of a high voltage in strong electricity into a stable electrical signal of a low voltage in weak electricity, implements multiplex switch control in conjunction with the controller, and only processes voltage signals in the whole circuit, thereby avoiding processing signals of a plurality of types, and guaranteeing the reliability of the multiplex switch control.

Abstract: A monitoring apparatus includes a detecting unit with a humidity sensor configured to sense humidity and output a corresponding humidity signal. A controller is configured to receive the humidity signal and output a ventilation control signal when the humidity signal exceeds a preset humidity threshold. A first driving unit is configured to receive the ventilation control signal and drive a ventilation device. The monitoring apparatus detects a humidity condition in an environment with a humidity sensor. When the humidity signal exceeds the preset humidity threshold, such as when the humidity is high, a ventilation control signal is output by the controller to control the first driving unit to drive the ventilation device. When the humidity is low the ventilation device is turned off.

Abstract: A replaceable panel structure and a panel replaceable moisture sensor, socket, and switch having the replaceable panel structure. The replaceable panel structure includes a base, and a panel body mounted on the base by using several snap structures. The snap structure comprising a slide slot and an engagement portion disposed on the base or the panel body, and a slide fastener disposed on the panel body or the base, the slide fastener is suitable to be inserted in the slide slot and slide back and forth in the slide slot to be engaged with or separated from the engagement portion, and the slide fasteners of the snap structures have consistent sliding directions in the slide slot. The replaceable panel structure replaces the panel and the base in a sliding manner, and has advantages of a simple structure, convenient removal, and stable engagement.

Abstract: A monitoring apparatus includes a detecting unit with a humidity sensor configured to sense humidity and output a corresponding humidity signal. A controller is configured to receive the humidity signal and output a ventilation control signal when the humidity signal exceeds a preset humidity threshold. A first driving unit is configured to receive the ventilation control signal and drive a ventilation device. The monitoring apparatus detects a humidity condition in an environment with a humidity sensor. When the humidity signal exceeds the preset humidity threshold, such as when the humidity is high, a ventilation control signal is output by the controller to control the first driving unit to drive the ventilation device. When the humidity is low the ventilation device is turned off.