Introduction: Tianyitong TY-880pro broadcast-grade wireless navigation broadcast system (also known as: two-color desk calendar (tally) intercom system), the system has red and green two-color 12-channel tally communication design, can also be set to 24-channel monochrome tally communication according to needs Set, standard 4-channel duplex intercom system terminal, the system can realize one-to-one, one-to-many call mode, support adding grouping settings, realize single channel can have multiple photographers, can quickly convey information to photographers The best collocation application, Tianyitong TY-880pro adopts high-quality and low-noise IC design specifications, so that the call maintains clear voice and maintains a good low-noise connection in any environment. It adopts the standard 19” height 1U cabinet-type hardware design, which can be used in the system cabinet or any place. The buttons have light display, panel microphone input, built-in speaker, multi-function buttons, etc. The guide can select the appropriate guide according to the demand. the way. Technical Parameters: Host: Power: AC110-220V Tally interface: DB25 male Headset mic interface: 4Pin XLR stereo headphone microphone interface, headphone impedance 8~600 ohms 100mW (min) Headphone jack: 4Pin XLR stereo headphone jack, headphone impedance 8~600 ohms 100mW (min) Microphone interface: 4pin XLR microphone interface, switched capacitor / dynamic microphone input, microphone level: -67dB Frequency response: 550~3.6KHz, <+/-3dB Total Harmonic Distortion (THD): <3% Signal to noise ratio (S/N): >50dB Built-in microphone: 70mmx30mm, 32 ohms, 3 watts Operating frequency: 428-439MHz digital frequency; Operating range: maximum distance between host and slave 2000 m Operating temperature range: 5 ~ 45 ° C Dimensions (1U height 19" rack), W: 440 mm x D: 280 mm x H: 40 mm Weight: 1.9 kg Child machine Power input: DC5V2A Operating frequency: 428-439MHz digital frequency; Transmission distance: 2,000 meters without cover, 300 meters through the wall Antenna interface: ANT antenna interface Headphone microphone interface: 2.5+3.5mm stereo headphone microphone interface, headphone impedance 8~600 ohms 100mW (min) Headphone jack: 3.5, mm stereo headphone jack, headphone impedance 8~600 ohms 100mW (min) Knob switch: 1 Power: Built-in lithium battery, fully charged for 10 hours. Indicator light: The charging is on, and it lights up when the battery is low. Weight: 150g Tally parameter Power input: DC5V2A Transmission distance: 2,000 meters without cover, 300 meters through the wall, Switch: 1 Power: Built-in lithium battery, fully charged for 10 hours. Work indicator: Working status When the current position is not in the main cutting pre-cut state, the default is not bright; when the current position is in the preview (PVW) window, it lights up in green, and when it is in the main cutting (PGM) window, it lights up red. Weight: 180g