This is a white ZSP-RF-W Elite Screens version 2 V2.0 remote control for raising and lowering a screen for a movie projector.
This ZSP-RF-W Elite Screens version V2.0 remote control has buttons for up, down, and and another function. It is a radio frequency remote so you don't have to worry about aiming an infrared bulb in the right direction as the radio signal goes out in all directions, up to about 100 feet.
Uses two AAA batteries. The battery door is included and tabs are intact and tight.