No need pairing or programming,just insert the new battery and it will work well.
eBay
WOOPKER Projector HY320 Mini Native 720P 4K Android11 300ANSI Wifi6 BT5.0 Voice Remote Home Cinema Outdoor Portable Projector
Aliexpress UK
No programming required, put batteries in and it can work well.
eBay
YERSIDA Mini Projector BL128 Portable Smart Home Native LED Projector Support 4K Video For Mobile Phone with WIFI Bluetooth LCD
Aliexpress UK
Batteries are not included (should use AAA 2).
eBay
Desktop Projector Holder Small Projector Countertop Stand with 360°Rotation For LCD/DLP Video Project
Aliexpress UK
Batteries are not included (should use AAA 2).
eBay
ICANZUO 3D Mini Projector WIFI Android 4K HD Projectors Decoding for HOME Entertainment with Infrared Remote Control Tripod
Aliexpress UK
Compatible Models: N2QAYA000042 N2QAYA000041 6451055569.
eBay
Salange Original Remote Control For HY300/HY300 Pro/ HY320/HY320 Mini Protector Without Battery Projector Accessories
Aliexpress UK
We'll do our best for you.
eBay
YG300 HD Mini projector Portable 3D ,with remote control kids gift birthday gift easy to carry/outdoor camping/home theater/
Aliexpress UK
Batteries are not included (should use AAA 2).
eBay
Velec Netflix Certification Projector Android 13 HY320 NTV Amlogic S950D4 1080P 500ANSI Dual WiFi BT5.2 Voice Remote Control
Aliexpress UK
Batteries are not included (should use AAA 2).
eBay
Blitzwolf V10 3" LCD Projector 120-Inch Screen Wireless Cast Screen 5G-WIFI Dual Bluetooth5.3 Electric UP&Down Keystone
Aliexpress UK