AVMATRIX TS3019 Wired Wireless Multi-Camera Tally System Compatible with VMix | eBay
Amazon.com: AVMATRIX TS3019-4 200 Meter Wireless Multi-Camera Tally System with 1x Tally Box and 4x Tally Lamps : Electronics
Cuebi Wireless Tally Lights with USB Cables & Straps (Set of 2) - Omega Broadcast & Cinema
vMix Tally Interface
Tally Wireless Camera | Wireless Tally Pro | Tally Vmix Camera | Vmix Switcher - 4-ways - Aliexpress
Cuebi Wireless Tally Lights with USB Cables & Straps
AVMATRIX Wireless Multi-Camera Tally Light System (4 x Tally Lamps) / SYNTEX.TV
Avmatrix Wireless Multi-camera Tally System Ptz Remote Control 200m Transmission 433mhz For Video Switcher Vmix Tally Lamp - Photo Studio Kits - AliExpress
Cuebi Wireless Tally Lights with USB Cables & Straps (Set of 4) - Omega Broadcast & Cinema
Tally Wireless Camera | Wireless Tally Pro | Tally Vmix Camera | Vmix Switcher - 4-ways - Aliexpress