Features: Support 433Mhz wireless or wired tally connection Up to 200m wireless connection distance (line-of-sight) The tally box with multiple interfaces including GPIO/USB/RS-485/RS-232 GPIO compatible with AVMATRIX and other video switchers Compatible with VMix via USB Type-C Wireless PTZ camera control via RS-232/RS-485 pass through Up to 16 tally lamps can be supported Both front and rear indicators on the lamps with 4-level adjustable brightness Visible signal strength and battery status on the tally lamp Tally lamp can be powered by USB type-c or 18650 li-ion battery 1/4 inch hot shoe for tally lamp installation Specifications: Tally Box Parameters Connections: 1x GPIO, 1x RS-232 terminal, 1x RS-485 terminal, 1x USB Type-C Number of Lamps: Suppert up to 16 tally lamps (12 LED indicator) Wireless Distance: Transmission up to 200m (line-of-sight) Wireless Frequency: 433MHz Wireless Connectivity: RS-485 serial connection Application Support: VMix, video switchers with GPIO-tally interface such as AVMATRIX, Roland, SONY, NewTek, Panasonic, DataVideo, or tally converter box with GPIO such as BMD's GPI and tally interface Power: Working Voltage - 5V, power consumption: ≥ 0.2W Tally Lamp Parameters Connections: 1x USB Type-C, 1x Rs-485, Tally out Power Supply: 5V USB power supply or 18650 li-ion battery (optional) power supply Brightness: Support 4-level brightness Battery Operating Time: Up to 9 hours (depending on battery capacity and lamp brightness/usage environment Power: Working voltage - 5V, Power Consumption - &gel 2.5W; Battery Charging Current: 5V 1A Mounting Hole: 1/4 inch hotshoe Physical Dimensions: 104 x 75.5 x 24.5mm (tally box), 98.5 x 65 x 26.5mm (tally lamp) Weight: 327g (tally box), 90g (tally lamp without battery) Temperature: Working - -20°C ~ 60°C / Storage - -30°C ~ 70°C Item Includes: 1x Tally Box 6x Tally Lamps 1x Suitcase 1x Power Supply(5V 1A) 5x USB 2.0 Type-C Cables 1x Antenna 1x GPIO Connector