boxed car timer switch time relay 0 to 40 sec kit 12V20Adelay off universal

Time relay with accuracy from 0 to 40 seconds.
Manufacturer: Deselectra
Old price: $16.00
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Item Description
Time relay with accuracy from 0 to 40 seconds.
Dimensions with box:
- length - 40 mm
- width - 27 mm
- height - 21 mm
Power supply - 12V DC - Have protection against reverse supply voltage.
Wired with 10 cm wires: - Black - negative 12V-
                                       - Red - positive 12V+
                                       - Two white wires - Normally open contact - NO contact of the relay  - Normally closed contact - NC - not wired Relay: 20А/12V DC - NO contact        
   10A/12V DC - NC contact (available, not wired)      
Time is adjusted by a trimmer. 
Principle of work:  
When power is on, the relay is activated - NO contact will close /NC will open/ and keep that position, until end of set time. By restarting power supply - cycle repeats. 
Please note: at the output of the relay doesn't have 12V.  
Device has got plastic box, as it is seen on the picture.
Package contents:
1. Mini Time Relay
2. Instruction for use and wiring diagram.