1
1. Overview
JWAT304-305 series waterproof telephone products are environmental high-tech products that have special
requirements for moisture, fire, dust, and freeze prevention in combination with subways, highways, power plants,
petrol stations, docks, steel companies, etc., and are an indispensable and extremely ideal product. Industrial
communication products, which must be used with switches.
1.1 Product Features
1.1.1 The JWAT304-305 series waterproof phone case is made of aluminum alloy die-casting, which has
good impact resistance and protection performance. The high-temperature powder on the surface is not
electrostatically sprayed to prevent static electricity. The circuit board adopts the concept of integrated design,
and integrates the basic call circuit and noise removal circuit in a machine. And preferably foreign well-known
brand components. After high and low temperature testing, procurement and production, the circuit undergoes
strict protection treatment, so that the environmental adaptability of the whole machine is further improved. The
phone uses an anti-noise handle.
1.2 Application
1.2.1 This Weatherproof Telephone Is Very Popular For subways, highways, power plants, petrol stations,
docks, steel companies and other environments that have special requirements for moisture, fire, noise, dust
and frost.
1.2.2 Ambient Temperature
：
-40
°F
～
+140
°F
1.2.3 Relative Humidity
：
≤95
％（
room temperature
）
1.2.4 Atmospheric Pressure
：
80
～
110KPa
2. Product Structure Characteristics
2.1 The waterproof telephone is composed of two parts: the shell (including engineering plastic, waterproof
keyboard, PC handle) and the double-sided integrated circuit motherboard (as shown in the figure below, the
model without amplifier has no speaker cable).
