30
85
86
87a
87
14
7
13
6
12
5
11
4
10
3
9
8
2
1
Fuse
(1A)
«GND»
«+»
«-»
Car battery
Diode 1N4007
Fuse
External
device
+
-
«GND»
Figure 32. Connection diagram of the relay to the outputs of the device OUT1 and OUT2
2.7 1-Wire informational interface (IButton) connection
1-Wire controller interface (IButton) allows to connect up to 4 digital sensors like DS18S20 (DS18B20) to the device,
and it can also operate with DS1990 keys or key / card readers that emulate DS1990 keys via interface 1- Wire.
Each DS1990 key is a chip with a unique identification number stitched into it at the manufacturing plant by which
the device identifies this sensor.
Saving the key codes in the device’s memory allows to use identification when changing the security mode, activating
the output with the profile set: “TM registered key indicator” and “TM key indicator”, and also necessary for operation of
the “Immobilizer” function.
The maximum number of stored keys - 16.
It is also allowed to connect external readers of contactless Proximity-cards and keyfobs that have TouchMemory
DS1990A key emulation interface. However, such readers, as a rule, do not operate together with thermal sensors
connected to the same physical interface.
Figure 33. TouchMemory System Key
Figure 34. TouchMemory key contact reader
Figure 35. Temperature sensor based on DS18S20 chip
Summary of Contents for SMART S-2422
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