SR-500 แบบสองทางวิทยุ 639 วัตต์

1) Compact handheld interphone
2) 7 Colour back light
3) 8000 meters
4) Easy Radio to Radio Cloning
5) Good service

SR-639 interphone FEATURES:
1) CTCSS/DCS codes.
155 Group CTCSS/DCS codes.
2) VOX function
Hand-free, Voice-operated transmission.
3) Squelch Levels
Reverse Burst eliminates unwanted noise, 3-level sensitivity adjustment.
4) Hi/Lo Power Select Feature.
High power output: 5W, Low power output: : 2W
5) High capacity Li-ion Battery
20% working, 80% standby, can last more than 50 hours.
6) Wind-noise Reduction.
7) Easy Radio-to Radio Cloning with optional Cloning Cable.
PC Programmable and copy fuction.
8) Coverage - Up to 8km.
9) Fashionable 7Colour backlight
10) LCD display.
11) USB connecter
12) Compact Design.