1. Volume, panjang dan lebar ultra-kecil hanya 97 mm × 78,2mm × 25,1 mm;
   2, industrial protection interface, easy to install;
   3. Adopt metal shell with protection grade of IP30;
   4. There is a router scheme;
   5. Wired support 1 WAN or 1 LAN, 10M/100M adaptive;
   6. Software and hardware watchdog anti-crash design, after the router is disconnected, it will automatically power off and restart to ensure stable and reliable operation of the equipment;
   7, automatic detection of network disconnection, automatic  restart of dialing failure, timing restart and other functions;
   8. Port mapping, DMZ host and other functions;
   9. Support VPN (PPTP Client, L2TP Client)

Sisi A
1. LAN1/LAN2: RJ45 interface; In standard router mode, LAN1 can be used as a WAN port.
2. DC power interface: power supply mode: optional DC/terminal (2Pin female terminal
Edg3.5mm). Adopt
3. 2.1mm round head power interface, positive inside and negative outside, voltage input of
12-24 V, recommended input power greater than 10W。
4. 3. Indicator light: LAN1/LAN2: wired network access indicator light, which is always on
when the connection is normal and flashes when there is data traffic. SYS lamp: it is always on
after power on, and it flashes slowly when the system is started normally. Flash when the reset
key is pressed. LINK light: In 4G or WIFI bridging mode, it flashes when dialing (bridging
AP), and it is always on after successful networking. 
Sisi B
1. 4G antenna interface: SMA external rotation and internal hole interface.
2. RST (reset) key: press this key for 5 seconds in the power-on state, the SYS lamp will flash,
and then restart, and the reset is successful.
3. SIM card insertion: snap-in SIM card holder. If you need to take out the SIM card, gently
push the SIM card.