Function and design description:
1. The circuit is connected as required and the time resistance and power supply voltage are set;
2. The output terminal is high before power on;
3. The "falling edge" trigger of the trigger terminal is valid, and the output terminal immediately becomes low level after the trigger, and the circuit starts timing;
4. After the set timing time is up, the output terminal will return to high level, waiting for the next "falling edge" trigger;
5. The chip is a non-repeated trigger type, which means that if the chip continues to trigger during the low-level output period after the trigger, the trigger is invalid;
6. The "falling edge" trigger on the trigger terminal refers to the moment of change from high level to low level;
7. Generally, the high level refers to the VCC voltage, and the low level refers to 0-0.3v or GND, as long as it meets the level requirements;
8. The trigger terminal can be connected to the ground with a light touch switch or single-chip IO port or other digital circuits to produce a "falling edge", which can be effectively triggered;
9. It can be designed as a power-on trigger, just short-circuit the trigger terminal to ground, it will be triggered when power-on, and the output will return to high level after the time is up, waiting for the next one
The falling edge triggers again.
Chip features:
1. Using CMOS technology, low power consumption, lead-free and environmentally friendly.
2. Output low level can directly push LED (please add current limiting resistor), output high level can push transistor (please add current limiting resistor).
3. Resistor can be used to adjust the timing time. There are 8*N (N=0.1.2.3) times timing options, and the time can be adjusted from 2s-1000h.
4. You can choose trigger timing and trigger terminal grounding and power-on timing.
5. Standby output high level, falling edge trigger, output low level after triggering, and return to high level after the delay is over.

Package Type:
All goods will pack into cartons and wrapped full of waterproof tape before shipment .

We can accept customized package to meet different requirements :
1.Every item will separately pack into plastic bag ,component, module can be packed in anti static bag .
2.Some fragile products such as the display screen can be packed in bubble bag .
3.Some large machines can be packed in wooden cases.
4.We can label JH code or client's code on package so that customers can check easily after receive goods.