Energy-saving single and double-way touch switch

A simple and reliable touch relay is used to transform the ordinary 86 switch panel into a touch switch (the actual chip sensitivity is very high and can be triggered as close as 2mm).

Has the following characteristics:

1. Integrated design of single and double circuits, convenient for personal board verification. The default is dual circuit, single circuit can be obtained by short-circuiting T3

2. Support 24V, 48V relays, the default is 24V relay, if you switch to 48V (6.4K ohm) relay:
C1 is changed to 68nF,
R4 is changed to 330 ohm,
D1, D7 is changed to 43V
, C2, C5 is changed to 10uF 50V 1206 patch
C6, C7 removal

3. Energy-saving drive, the drive relay power is less than 1/5 of the standard power

4. Single-layer wiring makes it easy for individuals to make circuit boards

5. The relay is powered on by default. If you want to change it to the default of not closing, you need to short-circuit T2 and T5.