S-dj-02 Wireless Intercom Safety Hard Hat Adjustable Helmet Personal Protective (Yisheng Brand) Size: Large

We are making, exporting, distributing and supplying S-Dj-02 Wireless Intercom Safety Hard Hat Adjustable Helmet Personal Protective (Yisheng Brand) in Beijing, China.

Model Number: YS-DJ-02
Product overview:
Wireless talk back safety helmet, without external
terminal equipment,Direct wireless intercom
between safety helmets.

Technical characteristics:
1. more than one two-way synchronous intercom.
2. transmit power 1W, calling distance 2-5 kilometers.
3. free networking, the number is not limited.
4., one button switch, the launch button to control the launch.
Housing ABS material, earmuffs can be inserted in the left and right sides of the helmet
Item number: YS-DJ-02
Item name: wireless intercom safety helmet
Wear: circumaural
Mode of energy change: electret
With or without microphone: Yes
Product weight: 820G
Product material: environmental protection, ABS and rubber
Power supply voltage: battery voltage 3V-4.5V supplied
Operating frequency range: 400Mhz-480Mhz
Transmit power: 1W
Temperature range: -40 DEG to 60 DEG C
Charging time: less than 2H
Talking time: more than 8h
Standby time: 300h
Speaker impedance: 4 ohms
Range of frequency response: 20-20000Hz
Battery type: 3.7V lithium battery