GitHub - nicolaus-hee/esp8266-benq-rs232-mqtt: Control a BenQ TH530 projector via its RS232 interface with an ESP8266, MQTT and openHAB.
BenQ TH670 DLP Projector – 3000 Lumens Full HD D-Sub LAN HDMI USB RS232 RCA IR Receiver – Star Light Supplies Kuwait | No 1 online portal for Office Supplies and Stationery in Kuwait
BenQ LH720 DLP Projector - 4000 Lumens / D-Sub / HDMI / LAN / USB / RS – WIBI (Want IT. Buy IT.)