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Rugged Telephone Handset
  • Rugged Telephone HandsetRugged Telephone Handset
  • Rugged Telephone HandsetRugged Telephone Handset
  • Rugged Telephone HandsetRugged Telephone Handset
  • Rugged Telephone HandsetRugged Telephone Handset
  • Rugged Telephone HandsetRugged Telephone Handset
  • Rugged Telephone HandsetRugged Telephone Handset

Rugged Telephone Handset

This rugged telephone handset is the first military handset designed by SINIWO according to H250 handset. As an real manufacturer and factory in China with our own R&D team, we have the ability to customize and design rugged telephone handset in the name of SINIWO with competitive cost and qualified quantity to win the market for clients.

Model:A25

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Product Description

This SINIWO rugged telephone handset is designed according to MIL standard handset H250, which is used for military telecommunication equipment, like radio, MIL telephone or police calling system. SINIWO also designed the matched microphone and speaker for clients who like the appearance of this rugged telephone handset but do not need MIL standard specification with cheap price.

 

Comparison parameter of rugged telephone handset A25 and MIL H250:

Model No.

H-250

A25

Weight

Approximately 350g

Approximately 350g

Ambient Noise

N/A

≤100dB

Speaker impedance

1000Ω (@1kHz)

1000Ω (@1kHz)

Microphone impedance:

150Ω (@1kHz)

150Ω (@1kHz)

Microphone output level:

More than -56dB(@1kHz)

-59dB(@1kHz)

Distortion:

Less than 5%(300Hz~3500Hz)

Less than 5%(200Hz~4000Hz)

Operating temperature range

-20℃~65℃

-45℃~55℃

Water resistance:

Remains fully function after submerged in 3 feet (91cm) of water for 2 hours

Remains fully function after submerged in 1 meter of water for 2 hours

PTT switch durability:

More than 2 million actuations

More than 2 million actuations


Feature of rugged telephone handset:

This rugged telephone handset is mainly designed for military use, so corrosion resistance grade and waterproof grade are the most important factors to think about. So we manufacture this handset with waterproof sound passing membrane on both microphone and speaker and seal all the space by waterproof glue.    


When we design this rugged telephone handset for military environment, we chose RoHS approved fiber reinforced polycarbonate material to strength the rugged feature. For clients who have interest in this rugged telephone handset in industrial filed, we offer matched choice to meet clients demand.  


Rugged telephone handset external curly cord details:

 TEPU military curly cord Dia 7mm (Default) working temperature: -40℃~+100℃

- Standard cord length 9 inch in retracted, 6 feet after extended (Default)

- Customized different length is available.

 PVC curly cord (Default), working temperature: -20℃~+40℃

- Standard cord length 9 inch in retracted, 6 feet after extended (Optional)

- Customized different length is available.  

 Weather resistant PVC curly cord (Optional), working temperature: -30℃~+50℃


For this Rugged telephone handset used in military environment, another important thing is noise reducing from the background. Both the front and the back of the microphone have sound input holes. Since the position of the front and the back are opposite, noise is input into both sides, which will cancel each other. The audio will not be canceled since it is only input into the speaking side of the microphone. Theoretically, in an environment with a lot of noise that is input into both sides of the microphone at the same time, the noise will be canceled.  

 



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