Specifications:VGB input: 0-1.5V/75 ohmsGain: -0.1-1.00dB/75 ohmsVideo bandwidth: 300MHzResolution: 1,600 x 1,200 dotsConsumed power: 3WInput power source: 220V/50Hz

The visual presenter is a full-automatic multifunction visual presenter. It capturesall types of presentation materials, such as papers, 3D objects and transparencies.It can be widely used in classroo

Product Name: Visual PresenterModel Number: 2000APlace of Origin: ChinaThe visual presenter is a full-automatic multifunction visual presenter. It capturesall types of presentation materials, such as

Features:1) It will light automatically in case of any sound and shut off after a certaintime2) Built-in light control circuit: idle at day; works at night or in case the placeis dim lit (adjustable)3

This switch can be programmed to turn itself on automatically at any time of a 24-hourperiod of five hours and then turn itself off.Main functions:1 Delay off function and programmable2 Timer on funct

Main function of this system:1) Record and play,teachers speaking,FM/tone frequency sending,broadcast receiving and teaching material edition.2) 100 sending frequency bands available,for adopting the

Product Name: Wireless Language Learning SystemModel Number: HD-IIIPlace of Origin: ChinaMain function of this system:1) Record and play,teachers speaking,FM/tone frequency sending,broadcast receiving

Specifications:1) Frequency range: 40MHz - 862MHz2) Nominal gain: 12.5dB±23) Adjustable gain range: 0 - 12dB4) Return loss: ≥10dB5) Voltage range: 230±10%6) For enhancement of antenna

Specifications:1) Frequency range: 40MHz - 862MHz2) Nominal gain: 12.5dB±23) Adjustable gain range: 0 - 12dB4) Return loss: ≥10dB5) Voltage range: 230±10%6) For enhancement of antenna