max wattage on 120v ac USA ?

There is a tough to find data sheet that does spec this unit at a max of 30vdc. Refer to this link for more info, http://electronics.stackexchange.com/questions/97721/why-ac-points-on-pcb-are-separated-by-a-holeThere are products that are very similar and rated for 120v ac use.

Does it have optocoupler isolation?

No opto-coupled isolation. There is a small transistor onboard that is driving the relay and as someone else pointed out, the coil has a diode across it to supress the counter EMF of the coil. This relay requires very little to drive it as long as it's wired correctly ("+" to 5-12VDC, "-" to Ground, "s" to your digital output. The output is active high (when your output is high, the relay energizes). The screw terminals (NO = Normally Open, NC = Normally Closed, C = Common).

How reliable are these? I bought one but it just died on me, the led lit but it wouldn’t switch anymore so I had to throw it away.

I've had two of these in service for over 2 years now with no issues. They are each separately controlling garage door momentary switches. They are each in a circuit with an Arduino activated by bluetooth to start the garage door motor from the momentary switch. They've worked great for me.

Does this only work with official Arduinos?

No, it will work with anything that sends out a 5v digital signal (though I also had success with a 3v esp8266, so input tolerances are probably fairly wide )

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5v Relay Module 5V Indicator Light LED 1 Channel Relay Module for Arduino ARM PIC AVR MCU

Product ID: 15850652

Details

Brand
TOLAKO
Connector Type
Through Hole
Contact Material
Tungsten
Contact Type
Normally Open
Mounting Type
PCB Mount

⚡220V AC load control

🔧Normally open & closed contacts

🔵5V-12V TTL control signal

KSh1969

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Description

⚡ Power your projects with precision and control — don’t get left in the dark!

PLUG PLAY SIMPLICITY - Just connect your digital output and instantly control motors, LED strips, or appliances.
UNIVERSAL COMPATIBILITY - Works flawlessly with Arduino, ARM, PIC, AVR, and other microcontrollers for versatile projects.
COMPACT PCB MOUNT DESIGN - Sleek through-hole mounting fits perfectly into your custom hardware setups.
DUAL CONTACT FLEXIBILITY - Includes both normally open and normally closed contacts for maximum control options.
SEAMLESS HIGH VOLTAGE CONTROL - Effortlessly switch up to 220V AC loads with industrial-grade reliability.

The 5V Relay Module by TOLAKO is a compact, PCB-mountable relay designed for microcontroller projects. It supports 5V-12V TTL signals to control both DC and AC loads up to 220V, featuring normally open and normally closed contacts. Ideal for controlling motors, LED strips, and home appliances, it offers reliable switching with tungsten contacts and broad compatibility with popular development boards.

Specifications

ASIN	B00VRUAHLE
Best Sellers Rank	#83,133 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Sensor Blocks
Brand	TOLAKO
Brand Name	TOLAKO
Coil Voltage	12 volts
Connector Type	Through Hole
Contact Material	Tungsten
Contact Type	Normally Closed, Normally Open
Customer Reviews	4.6 out of 5 stars 384 Reviews
Manufacturer	Tolako
Maximum Switching Voltage	220 volts
Minimum Switching Voltage	5 volts
Model	BJ-DT0Y-001
Mounting Type	PCB Mount
Number of Items	1
Number of Terminals	3
Operation Mode	Motor
Part Number	6458512

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KSh1969

Duties & taxes included

In stock

Sold byAmazon KenyaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kenya.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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