Module: ZT3L - https://developer.tuya.com/en/docs/iot/zt3l-module-datasheet?id=Ka438n1j8nuvu
MCU: TLSR8258F1KAT32
- TS0041
_TZ3000_itb0omhv (Wireless switch with 1 button): Uses only S2 / S2 LED
- TS0042
_TZ3000_tzvbimpq (Wireless switch with 2 buttons): Uses S1/S3
- TS0043
_TZ3000_pkeqinnt (Wireless switch with 3 buttons): Uses S1/S2/S3
Link: Aliexpress
Same PCB, different front-faces.
Battery: CR2023, but can easily fit CR2034/CR2035 with no issues.
Pinout
| Pin |
Type |
Description |
| D2 |
IN |
S1 Switch (pull-down) |
| C2 |
IN |
S2 Switch (pull-down) |
| C3 |
IN |
S3 Switch (pull-down) |
| D4 |
OUT |
S1 LED |
| C4 |
OUT |
S2 LED |
| D7 |
OUT |
S3 LED |
Photos

Module: ZT3L - https://developer.tuya.com/en/docs/iot/zt3l-module-datasheet?id=Ka438n1j8nuvu
MCU: TLSR8258F1KAT32
_TZ3000_itb0omhv(Wireless switch with 1 button): Uses only S2 / S2 LED_TZ3000_tzvbimpq(Wireless switch with 2 buttons): Uses S1/S3_TZ3000_pkeqinnt(Wireless switch with 3 buttons): Uses S1/S2/S3Link: Aliexpress
Same PCB, different front-faces.
Battery: CR2023, but can easily fit CR2034/CR2035 with no issues.
Pinout
Photos