Addr.: Unit 704, No. A3 Building, Tel: +86-592-6211770
3
rd
Software Park, Xiamen, China 361000 Fax: +86-592-6211727
www.bivocom.com
9
3.3.1 SIM/UIM Card
Insert the SIM/UIM card.
TW810
supports normal SIM/UIM only, so if you’re using a Micro SIM or Nano SIM card,
you may need to use a Micro SIM or Nano SIM to Normal SIM card adapter.
Make sure your NB-IoT Modem is powered off, then use a needle object(such as a pen) to
push the button near the SIM/UIM card holder, it will flick out immediately. Put the
SIM/UIM card to card holder with chipset upside, insert it to NB-IoT Modem and make
sure it’s tightly matched.
Warning: Never install SIM/UIM card when NB-IoT Modem is powered on.
3.2.2 Cellular Antenna
Fasten the cellular antenna.
Screw the SMA male cellular antenna to TW810 (SMA female interface), make sure it is
screwed tightly to ensure the strength of signal.
3.2.3 Terminal Block, Power Cable and Console Cable
Insert the terminal block to modem correctly.
1) Definition of Terminal Block Interface
PIN No.
Signal
Name
Default Function
Extended Function
1
PWR
Power input anode
NA
2
GND
Power Ground
NA
3
IO1
GPIO, able to check dry contact
signal and 3.3 V switch signal,
output 3.3V switch signal
Reserved RS232 RTS
and
TTL RX
4
IO2
GPIO, able to check dry contact
signal and 3.3 V switch signal,
output 3.3V switch signal
Reserved RS232 CTS
and
TTL TX
5
IO3
GPIO, able to check dry contact
signal and 3.3 V switch signal,
output 3.3V switch signal
Reserved RS232 DCD
