CHIMINE GYJK-LU-23 Wireless Explosion-proof Intercom Pickup Speaker Amplification Intercom System Coupler in Shanghai, China

2.
Ringer
"
This telephone utilizes moisture-proof piezoelectric ceramics mounted within the body.
All electronic components are mounted on a printed circuit board (PCB) connected to the body via a plug socket. The battery compartment is located within the body.
3.
Ringing sound level greater than
80dB(A)
4.
Environmental Conditions
Ambient temperature
: -5°C to +40°C;
Relative humidity
: s95% (at +25°C)
Atmospheric pressure
: s80-106kPa
Ambient noise
: s75dB(A)
5.
Communication distance
: s10km,
Cable specifications: MHYV1*2*7/0.37.
Installation and Use
1. Multiple telephones can be connected in parallel within this device, with a maximum of four. See attached diagram:
System Connection Diagram
2. All connecting wires must use 2-core RVS plastic wire with a cross-sectional area of 1mm² to 1.5mm², or other types of wire.
3. The telephone must be mounted on a wall.
4. This device and telephone must not be connected to any switch or other telephone type.
5. This telephone is powered by four R20 White Elephant 1# dry-cell batteries. Do not use other types of batteries.
6. When two telephones are connected, the line distributed inductance... s0.01H, capacitance ≤
0.3uF
When four units are connected, the line distributed inductance ≤
0.01H, capacitance ≤
3uF.
7. Usage
:
The calling user picks up the handset and presses the call button. The other party picks up the handset to talk to the host. After the call, both parties hang up.

Maintenance
1. This device is similar to other electronic equipment and can be maintained and serviced in the same manner.
2. Regular and planned inspections and maintenance should be performed based on the actual operating environment, and batteries should be replaced regularly to ensure proper operation.
3. If damaged electrical components are found during maintenance or repair, they must be replaced with parts of the same specifications and models as the original device. Do not replace them at will.
4. Weight of this device
<2kg