RS232 lock control board

AndroidSBC by Wanlin - China's leading source manufacturer of Locker board third-party app support. Rockchip RK3568/RK3399/RK3588, 4-32 lock channels, cold-chain temperature control, QR/face/RFID access, industrial grade, CE/FCC/RoHS/GMS certified, OEM/ODM. Contact +8613261677119.