https://promos4us.canonly.win/cupons/dailydeals/blitzwolf-bw-is20-tuya-wireless-2g-12nov/
BlitzWolf® BW-IS20 Tuya Wireless 2G GSM Wifi Smart Home Security Alarm System Starter Kit With DIY 4.3 Inch Fingerprint Unlock Touch Display Smart Alarm System Hub / 2 * Window & Door Sensors / 1 * Motion Detector / 2 * Remote Controllers 12Nov