Home > Auto Electronics >

7.4v 2800mah Li Ion Battery 5W Wireless Listening System

Categories Wall Listening Device
Brand Name: HEWEI
Model Number: HWJT-WS900B
Certification: YES
Place of Origin: Made-in-China
MOQ: 1 set
Price: USD 1500~ 5000
Payment Terms: T/T
Supply Ability: 300 kits per month
Delivery Time: 10-30 working days
Packaging Details: carton package,
Dimension: L110 * W57 * H39mm
Power supply: 7.4V / 2800mAh Li ion Battery
Receiving Channel: 16
Power: 5W
Weight: 240gram
Receiving Sensitivity: 0.20μV@20/25KHz typical
Rated Audio Power: 1W
Audio Distortion: 5% or less
Storage: 32GB which can record for 500hours
Recording file format: WAV
Playback function: Yes
USB2.0 Extract: Support
With earphone: Yes
Working Temperature: -25℃~ + 60℃
  • Product Details
  • Company Profile

7.4v 2800mah Li Ion Battery 5W Wireless Listening System

Wireless Listening System

Model: HWJT-WS900B


1. This wireless listening system consists of wireless transmitting part and receiving part. The

wireless transmitting parts are equipped with 10 different frequency bands and different shapes,

which can be used simultaneously whilst not interfering with each other.

2. The wireless transmitting parts can be concealed perfectly which can obtain crime evidence while

not affecting their normal work.

3. Built-in high sensitivity microphone, which can listen to the sound in the room up to 80sqm.

4. Power consumption of transmitting modular is only 20mw, which can ensure longer working time.

5. Long transmission distance, which is about 200-500m in the urban visual environment. It’s subject to

the amount of barrier and electromagnetism intensity.

Technical Parameter:

Receiving Part
DimensionL110 * W57 * H39mm
Power supply7.4 V / 2800 mAh Li-ion Battery
Working time upto 8hours
Receiving Channel16
Receiving Sensitivity0.20μV@20/25KHz typical
Rated Audio Power1W
Audio Distortion5% or less
Storage32GB which can record for 500hours
Recording file formatWAV
Playback functionYes
USB2.0 ExtractSupport
With earphoneYes
Working Temperature-25℃~ + 60℃

Transmitting Parts
Item No.Front End


Receiving Channel

Power SupplyReceiving RangeWorking TimeCharging Time
1Led Lamp1220v200~500mAll time--
2Power Strip2220v200~500mAll time--
3Power Bank3Li battery200~500m15days12hours
4Digital perpetual calender4“D” cell200~500m3days10hours
5WI-FI Router5220v200~500mAll time--
6Mini Black Sensor6Li battery200~500m20hours2hours
7Vehicle Charger7Vehicle battery200~500m----
8Tissue Box8Li battery200~500m2days2hours
9Air Conditioner Remote Control9AAA battery200~500m2days10hours
10Wall Light10220v200~500mAll time--

Cheap 7.4v 2800mah Li Ion Battery 5W Wireless Listening System for sale
Send your message to this supplier
*To: Beijing Heweiyongtai Sci & Tech Co., Ltd.
Characters Remaining: (0/3000)
You may also be interested in :
Inquiry Cart 0
  • Haven't found right suppliers
  • Our buyer assistants can help you find the most suitable, 100% reliable suppliers from China.
  • And this service is free of charge.
  • we have buyer assistants who speak English, French, Spanish......and we are ready to help you anytime!
  • Submit Buying Request
    Contact Us Quickly