You can use the VCR11 Remote Control to control the MeetingEye 500. VCR11 uses two AAA batteries (1.5V).

Specification

Product
Product id	948383
Brand	Yealink Network Technology
Partnr	VCR11
EAN/UPC code	YEA-VCR11
Design
Remote control proper use	VCR
Brand compatibility	Yealink
Compatible products	MeetingEye 500
Product colour	Black, Silver
Input type	Press buttons
Display
Built-in display	N
Battery
Battery technology	Alkaline
Battery type	AAA
Battery voltage	1.5 V
Number of batteries supported	2
Packaging data
Quantity per pack	1 stuk(s)
Packaging content
Manual	Y