https://www.kce.url.tw/en/custom_15369.html 2.【 [+] key-Tens digit】Output Control - ON/OFF ±1 2.【 [+] key-Tens digit】Output Control - ON/OFF ±1 ▇ KC-671N ±1° ON-OFF
https://www.kce.url.tw/en/ KE CHYUN ELECTRIC CO., LTD