Does the module draw current when in the open state? If so, how much current is drawn.

I haven't measured it's current draw when the relay is off, but I could almost bet this only takes a few milliamps. That 8-pin controller chip is not going to draw much energy. The biggest current draw is when the relay coil is turned on - probably 80 or 100 mA for the coil.

Will this switch reset if the dc power is removed?

Yes they revert to default when power is removed

Is this limited to a 30v dc application or can i use this to switch my 12v dc devices? if so, what is the amp rating for a 12v dc device? thanks!

Contact Type Normally Open Current Rating 10 Amps Brand HiLetgo Coil Voltage 12 Volts Contact Current Rating 10 Amps Maximum Switching Current 10 Amps

How would one orient a polarized 0.1uF capacitor in the momentary switch circuit?

If you are suppressing transients then the cap should be connected between line and ground in a DC circuit.

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HiLetgo 2pcs 12V Single Bistable Self-Locking Relay Module Push to Start and Stop

Product ID: 45094942

Details

Connector Type
Screw
Contact Material
Silver
Contact Type
Normally Open
Current Rating
10 Amps
Mounting Type
Surface Mount

⚡12V coil voltage

🔄Bistable self-locking action

🔌10A high current rating

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€ 24.64

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Lock in control, unlock your power game!

POWER UP TO 2000 W SAFELY - Handles high loads with a 10A current rating and silver contacts for reliability.
VERSATILE TRIGGER OPTIONS - Supports both manual button and low-level trigger switch inputs for flexible integration.
COMPACT SURFACE MOUNT DESIGN - Easy installation with screw connectors, perfect for professional setups.
BUILT TO LAST A MILLION CYCLES - Durability that keeps your projects running without a hitch.
EFFORTLESS CONTROL INSTANT RESPONSE - Push-to-start and stop functionality for seamless device management.

The HiLetgo 2pcs 12V Single Bistable Self-Locking Relay Module offers reliable push-to-start and stop control with a durable design rated for 1,000,000 cycles. Supporting up to 10A current and 2000W load, it’s ideal for household, industrial, and lighting applications. Its versatile trigger options and compact surface mount design make it a must-have for efficient, professional electrical control.

Specifications

ASIN	B01HHM5M4M
Best Sellers Rank	#89,659 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #71 in Electromechanical Relays
Brand Name	HiLetgo
Coil Voltage	12 Volts
Connector Type	Screw
Contact Current Rating	10 Amps
Contact Material	Silver
Contact Type	Normally Open
Current Rating	10 Amps
Customer Reviews	4.0 4.0 out of 5 stars (173)
Manufacturer	HiLetgo
Maximum Switching Current	10 Amps
Maximum Switching Voltage	12 Volts
Minimum Switching Voltage	12 Volts
Model	3-01-0824-A
Mounting Type	Surface Mount
Number of Terminals	3
Operation Mode	Automatic
Part Number	3-01-0824-A
Unit Count	2.0 Count
Wattage	2000 watts

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