KTW7.4 Mine Intercom

KTW7.4 Mine Intrinsically Safe Walkie-Talkie

KTW7.4 is primarily used in coal mine underground;
This unit is an analog model with large battery capacity and transmission power.
Supports individual call, group call, and all call.

Operating Voltage and Current

Ø Operating voltage: DC7.4V

Ø Standby current: ≤50mA

Ø Operating current: ≤2A

Ø Operating time: ≥16h

Ø Standby time: ≥72h

Walkie-Talkie Technical Parameters

Ø Number of channels: 16

Ø Wireless operating frequency: 450 MHz～470MHz

Ø Transmission power: -30dBm～30dBm (at antenna front)

Ø Receiving sensitivity: -80dBm

Ø Antenna parameter: 50Ω

Battery Parameters

Ø Battery type: Lithium Manganese Oxide Li-ion Battery

Ø Battery model: Single cell 623967/3.7V/1450mAh, 2 cells in series

Ø Battery open-circuit voltage: ≤DC 8.4V

Ø Battery output current: ≤2.5A

Voice sound level: ≥75dB(A).

Main function: Communication between walkie-talkies is clear, noise-free, and loud.