DC 12V delay relay with adjustable time and normally open output

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The DC 12V Normal Open Delay Relay Module is a compact timer relay board for controlling electrical loads with an adjustable delay. The module operates from 12V DC and has a relay with normally open, normally closed and common contacts.

The delay time is adjusted using the TIME ADJ potentiometer. Turning the potentiometer clockwise increases the delay time. The module has eight selectable time ranges, allowing delays from approximately 0.1 seconds up to approximately 1 hour.

The module is built around a CD4541BM CMOS timer and uses an oscillator and digital counter to generate the delay. The five jumpers S1 to S5 are used to configure the time range and operating functions. The first jumpers are used for time range selection, while the remaining jumpers are used for operating mode and trigger function. The exact jumper combinations can vary between different versions of the module and should be checked against the markings on the actual circuit board.

The module has reverse polarity protection using a protection diode on the power input. A red PWR LED indicates that power is connected and a green TIME LED indicates the timing function.

The relay contacts are COM, NO and NC. NO is normally open and closes to COM when the relay is activated. NC is normally closed and is connected to COM when the relay is in the idle state. The relay contacts can be used to control both DC and AC loads within the specified contact ratings.

Facts.
Product type: DC 12V delay relay
Supply voltage: 12V DC
Recommended supply voltage: 12V DC
Idle current: approximately 5.5mA
Maximum current consumption: approximately 42mA
Timer IC: CD4541BM
Time ranges: 8 selectable ranges
Shortest delay: approximately 0.1 seconds
Longest delay: approximately 1 hour
Time adjustment: TIME ADJ potentiometer
Clockwise adjustment: longer delay
Jumpers: S1 to S5
Time range selection: S1 to S3
Operating mode: S4
Trigger function: S5
Relay contacts: COM, NO and NC
Relay contact rating: 10A at 250V AC
Relay contact rating: 10A at 30V DC
Output type: Potential free relay contact
Protection: Reverse polarity protection diode
Power indicator: Red PWR LED
Timing indicator: Green TIME LED
Relay type: Normally open delay function
NO contact: Closed when relay is activated
NC contact: Closed when relay is idle

Included.
1 pc module.

About the product.
Weight: approx 23 gram.
Contact us if you have questions at info@pchbutik.se
Article no: 3853
Remaining stock quantity can be found under the Product details tab.
In our range since: 2026-11-02

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