Honeywell International Inc. RTU-L12 用户手册

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1.5.3 Input Cable 1 – Door Contact 
Supervised input1 is for the door status control; resistors must be installed 
at the door contacts.  
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Figure 8: Supervised Input 1 connection – Door Contact 
IN1 (brown) 
GND (black) 
 
Yellow resistor: 1210 Ohm 1% 
White resistor: 392 Ohm 1% 
Close contact resistance: 296 Ohm 
Open contact resistance: 1210 Ohm 
Max wires resistance: 25 Ohm  
 
 
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