How are they programmed?

You need some sort of programmer. I used this one which works well : https://www.amazon.com/dp/B08QMMGZLB?ref=ppx_yo2ov_dt_b_product_details&th=1

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3PCS ESP8266 ESP-01S Wireless WiFi Transceiver Relay Module Compatible for Arduino Smart Home Remote Control Unlock Set

Product ID: 445587188

Details

Brand
AOICRIE
Connector Type
Screw
Contact Type
Normally Open
Mounting Type
Surface Mount
Operation Mode
Automatic

⚡5V mains control

📶300m WiFi range

🧠80MHz CPU, 1MB memory

€ 30.88

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Description

📡 Unlock your smart home potential—anywhere, anytime!

TRIPLE PACK VALUE - Three modules and relay boards for multiple smart projects.
COMPACT LIGHTWEIGHT DESIGN - Fits perfectly in tight spaces for discreet installations.
PLUG PLAY WITH OPEN SOURCE - Includes APP and LUA source for effortless customization.
ROBUST WIRELESS CONNECTIVITY - Stable 802.11 b/g/n connection up to 300 meters.
SEAMLESS SMART HOME INTEGRATION - Control any device remotely via WiFi with ease.

The 3PCS ESP8266 ESP-01S Wireless WiFi Transceiver Relay Module set empowers you to build and control smart home devices remotely via a stable 5V WiFi connection. Featuring a powerful 80MHz CPU and 1MB memory, these compact modules support 802.11 b/g/n with up to 300m range, perfect for DIY enthusiasts and professionals seeking reliable, customizable automation solutions.

Specifications

ASIN	B09XHJFBSH
Best Sellers Rank	#241 in Computer Networking Transceivers
Brand Name	AOICRIE
Coil Voltage	5 volts
Connector Type	Screw
Contact Type	Normally Open
Customer Reviews	3.9 3.9 out of 5 stars (40)
Included Components	Blu-ray
Manufacturer	AOICRIE
Maximum Switching Voltage	5 volts
Minimum Switching Voltage	5 volts
Mounting Type	Surface Mount
Number of Items	3
Number of Terminals	3
Operation Mode	Automatic
UPC	701715508514
Unit Count	3 Count
Warranty Description	3 months

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€ 30.88

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered 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 Austria.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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