Wirless Standard: IEEE802.11b/g
Date Rate: 1-54Mbps
Frequency Band: 2.4GHz
Modulation Techniques: DSSS: CCK (11Mbps, 5.5 Mbps) / QPSK (2Mbps) / BPSK(1Mbps)
Transmit Power: >=17dBm
Sensitivity: < -76dBm@11Mbps (subject to the actual test value)
Coverage Range: Outdoors: 300m / Indoors: 50m
Security: WEP(64/128 bits) / WPA-PSK /WPA2/WPS
Auto connection:  Support storing 8 AP settings and automatically searching and connecting loop
Audio G.711&G.729a/b
IP Configuration: Static IP / Dynamic IP (DHCP)
PTT: Support PTT cluster intercom (With Server Support)
One Key Alarm: Support SOS call (With Server Support)
SMS: Support English/Chinese short message and mass texting (With Server Support)
P2P: Support
Settings Protection: Password protection for setup menu
Ping function: Support
Keypad lock: Support lock and unlock
Flashlight: Support
Firmware Upgrade: Wifi wireless

Features

1. Data record 
  Phone book function, support setting individual ring tones.
  Dialed calls;
  Missed calls;
  Received calls;
  Support editing and storing record;
  Quick search for phone book contacts;
  Talk time indicator;

2. Call control
  One key dialing;
  Speed dialing;
  Second dialing;
  Call forward;
  Call hold;
  New call;
  Call mute;

3. Dialing mode
  SIP account dialing;
  P2P dialing, i.e. IP address dialing;
(available without server)

4. Answer mode
  Earpiece
  Headsets

5. Ringing mode
  Ring tone mode
  Vibration mode
  Ring + vibration mode
Loud ring tone with backlight flashes prompt

6. SMS
  Chinese / English SMS editing, sending and receiving;
  Custom group list;
  SMS group sending;

7. Utilities
  Stopwatch
  Calculator
  Calendar  
  Time display under power off situation / set time synchronization
  Flashlight

8. PTT and SOS function

PTT cluster intercom
  Pre-construction group call 
  Temporary group call 
  Temporary group callback
  Person to Person call

SOS one-key alarm

9. PING test
  Manually PING IP
  PING network automatically
  PING DNS automatically
  PING SIP Server automatically
  PING SIP Proxy automatically
  PING STUN Server automatically

10. Firmware Upgrade
  Wifi wireless

11. Power Management
  Standby power indicator
  Low power voice prompt 
  Charging mode:
﹡Block-charger / Battery block-charger mode 
﹡Standard USB charging