Features: 1.Capacitive Touch Ic, Uses TTP224 For Responsive 4-Key Touch Induction Capabilities. 2.4-Channel Indicator, Features Onboard Level State Indicator For Easy Monitoring. 3. Components, Ensures Durability With Accuracy Processing And Electronic Components. 4.Easy Installation, Small, User-Friendly Design For Effortless Setup And Removal. 5.Customizable Output Modes, Set Key Output, Maximum Output Time, And Power Selection With Ease. Description: 1. Onboard TTP224 Capacitive 4-Key Touch Sensing Ic 2. Onboard 4 Way Level Status Indicator Lights 3. Working Voltage: 2.4V-5.5V 4. The Module Can Set The Output Mode, Key Output Mode, Maximum Output Time And Fast/Low Power Consumption Selection 5. Pcb Board Size: About 35(Mm) x 29(Mm) Material: PCB colour: As shown Package Contents: 5 x TTP224 4 Way Touch Switch Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.