Accessories - Teltonika FM1200 User Manual

3.7 Accessories

Note: Teltonika does not provide any additional equipment like panic
buttons, door sensors or others.
1 – Wire devices
One of the realized features FM1200 is 1-Wire® data protocol, which enables
connection of thermometer (DS1820, DS18S20 and DS18B20) and I-Button type:
DS1990A (Figures 8 and 9 show FM1200 and 1-wire® device connection schemes). For
additional information please refer to the 1-Wire Design Guide document.
Note that FM1200 devices supports temperature sensors in parasitic mode! In
this particular mode temperature sensor is connected without use of 1Wire power:
Left row of pins
1W. PWR
must be connected
to GND pin 3
1W. Data
(FM1200 – Green
wire)
GND
(FM1200 – Blue
wire)
Digital Input
Figure 8. Digital thermometer DS1820 and TTJ100 connection scheme
1
2
3
4
Right row of pins
Vpp (+5 Volts DC)
– power source for
1
external digital
sensor
Output from
2 external digital
sensor
16