Digital Touch Sensor TTP223B Capacitive Touch Switch

Digital Touch Sensor TTP223B Capacitive Touch Switch

Block features are as follows :
Jog type :: initial state is low, high touch , do not touch the low ( similar touch key function )
Low power consumption
Power supply for 2 ~ 5.5V
Positive and negative can be used as a touch surface ,Can replace the traditional touch of a button
Four positioning holes M2 screws , easy to install

+ Optocoupler with triac can complete touch fluorescent and other smart home projects ;
+ Delay + optocoupler with triac can complete stair light touch .