九九精品综合人人爽人妻_综合自拍亚洲综合图区www_放荡的丰满少妇中文字幕电影_中文字幕制服丝袜第一页

YZ-911Multimedia digital wireless public address system/machine
The main technical parameters:   1. Audio power: 65 w   2. The frequency range: 188-260 MHz   3. The total number of channels: 30   4. Frequently ring tone: 40-12 KHz   ...

YZ-912Multimedia digital wireless public address system/machine
The main technical parameters:   1. Audio power: 65 w   2. The frequency range: 188-260 MHz   3. The total number of channels: 30   4. Frequently ring tone: 40-12 KHz   ...

BJY-100High power amplifier is
The main technical parameters:   1. The rated output power: lOOW (BJY - 100), 50 w (BJY - 50)   2.20 V, 30 V and 125 V constant voltage output   3.2 mic input, 2 route road input &nb...

DJY-251Bell automatic control instrument
The main technical parameters:   1. Control the number of not less than 120 times   2. Day time error < 2 s/day   3. The maximum switching current 4 a   4.2 roadmap for cont...

CY-491Waterproof column

The meeting microphone
Category: meeting microphone series Model: SG - 556 Specification: AR - 556 (Feature) : Can change way: ￠14 back capacitance The Type of Adapter: ￠14 Style of capactitanc Directivity: the heart sh...

Wireless microphone

CY-2122CY-2122

CY2122A/B/C型CY2122A/B/C型

CY-2121BCY-2121B