Ningbo Joiwo Explosion-proof Science and Technology Co., Ltd.

Industrial telephone manufacturer

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Hand free elevator phone intercom clean room telephone-JWAT403

The Joiwo JWAT403 Handsfree Telephone is a stainless steel, weather and vandal resistant handsfree speakerphone in an open enclosure wall mount housing .The speakerphone  has a user interface which consists of a button, full keypad  and a microphone/speaker. Pressing the speakerphone full keypad causes a call to be made to a telephone number. 

This telephone could be widely used in chemical pharmaceutical clean room, elevator, clean room factory workshops and other places.

Product Details

1. The phone can form an independent telephone communication system with program-controlled switches and couplers.  

2. The phone can be connected directly to the telecommunications network.  

3. After the  composition of the call system, each phone is an independent station.  The malfunction of any phone doesn’t affect the whole system work.  

4. After the  composition of the call system, the product has an automatic gain  function, and the voice does not vary with distance or telephone  quantity.  

5.Telephone circuits  within the integrated circuit using internationally accepted  double-sided, with hair the exact number, call clarity, job stability,  etc.  

6. Stainless steel housing, high mechanical strength, strong impact.  

7. The buttons are flat  and smooth without relief; stainless steel, acid and alkali resistance,  chemical corrosion resistance, using various cleaning agents for  surface cleaning.  

8. Hands-free keypad  design, to avoid cross-contamination; phone built-in circuit  anti-interference ability, stable voice quality, clarity.  

9. Volume can be adjusted.  

10.When the telephone line is busy, the phone will automatically hang up.  

11. There’s an area to place an instruction card in front of the phone.  


Signal voltage DC5V 1A
Standby operating current ≤1mA
Frequency response 250~3000 Hz
Ringing level ≥80dB
Defend Grade IP54
Corrosion grade WF2
Ambient temperature -40~+60℃
Atmospheric pressure 80~110KPa
Relative humidity ≤95%
Installation Wall-mounted



Why Choose Us


Certification :

SGS, ISO 9001:2000 , CE, FCC,ROHS,CNEX, IP65/IP66/IP67,


6 sets/carton, 18kg/carton

Delivery date:

3-7 days


1 set

Supply Ability:

5000 sets/month

Payment Term:

T/T, Paypal, Alibaba Trade Assurance, L/C or others for negotiation.

Samples Offer:

Samples are available and can be free for strategic customer.

Samples arrangement:

Standard samples will be prepared to sending in about 3 working days. 

(And DHL 3-5days; UPS 3-5days; Fedex / TNT 3 5days; EMS 7 days to reach destination)

After-sales Service

2 Years' Warranty and spare parts are available for maintenance.


Tel: 0086-574-58223619, Mob: +86-13858299692


Ningbo Joiwo Explosion-proof Science and Technology Co., Ltd.



Address: No. 8, Guoxiangqiao Middle Road, Lanjiang Street, Yuyao City, Zhejiang Province

Purchasing: product application case