can it be used for cutting and giveing electricity to tubelights,fans and plugs .can i use it with rasberry pi. thanks in advance.

Yes find the script on internet easily available

Can this be used with a Raspberry Pi 2 ?

u can drive the led only but for relay u have to supply 12v externally.

Can I vary the voltage output from the relay by PWM?

For what purpose you want to vary the voltage?

What will be the shipping charge if I buy 3 relay boards?

SirFree shipping for all the orders above Rs.1000, Rs.69 as shipping charges for the orders below Rs.1000Thank you

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Robocraze 8CH_ULN2803_RELAY_BOARD Engineers Guild Pvt Ltd Eight Channel 8 Ch 12V Uln2803 Based Relay Board Module

Product ID: 76113945

Details

Connector Type
Screw
Contact Material
Silver
Contact Type
Normally
Current Rating
7 Amps
Mounting Type
PCB Mount

⚡7A high-current relay

🔩Screw terminal connectors

🛡️ULN2803 IC driver protection

Description

🔌 Power your projects with precision and protection!

POWER UP TO 7 AMPS ⚡ - Control heavy-duty AC/DC appliances effortlessly with robust 7A relays.
UNIVERSAL COMPATIBILITY 🌐 - Seamlessly integrates with Arduino, AVR, PIC, ARM, 8051, and more.
PLUG PLAY SCREW TERMINALS 🔩 - Quick, secure wiring with high-quality terminal blocks for hassle-free setup.
COMPACT LIGHTWEIGHT DESIGN 📏 - Sleek 20cm x 7.4cm footprint fits perfectly in any project enclosure.
MICROCONTROLLER SAFE ZONE 🛡️ - ULN2803 IC shields your Arduino or MCU from relay kickback damage.

The Robocraze 8CH_ULN2803_RELAY_BOARD is an 8-channel 12V relay module capable of switching up to 7 amps at 250VAC or 24VDC. Featuring screw terminal connectors for easy wiring and a ULN2803 IC driver for reliable microcontroller protection, it supports a wide range of MCUs including Arduino and ARM. Its compact design and high-quality components make it ideal for controlling motors, lights, fans, and other high-current devices in professional and hobbyist applications.

Specifications

ASIN	B00LMX97UI
Best Sellers Rank	#145,862 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #539 in Relays
Brand Name	Robocraze
Coil Voltage	12 Volts
Connector Type	Screw
Contact Current Rating	7 Amps
Contact Material	Silver
Contact Type	Normally Closed
Current Rating	7 Amps
Customer Reviews	4.1 4.1 out of 5 stars (80)
Importer Contact Information	Robocraze, Ground Floor, 912/10 Survey no. 104 4th G street, Chelekare, Kalyan Nagar, Bengaluru - 560043, Contact: +91 812 3057 137
Included Components	8 Ch 12V Uln2803 Based Relay Board Module
Item Type Name	Relay Board Module
Item Weight	118 Grams
Manufacturer	Elementz Engineers Guild Pvt Ltd, Robocraze, Ground Floor, 912/10 Survey no. 104 4th G street, Chelekare, Kalyan Nagar, Bengaluru - 560043, Contact: +91 812 3057 137
Manufacturer Contact Information	Robocraze, Ground Floor, 912/10 Survey no. 104 4th G street, Chelekare, Kalyan Nagar, Bengaluru - 560043, Contact: +91 812 3057 137
Maximum Switching Current	7 Amps
Maximum Switching Voltage	12 Volts
Model Number	8CH_ULN2803_RELAY_BOARD
Mounting Type	PCB Mount
Number of Items	1
Number of Packs	1
Operation Mode	Automatic
Packer Contact Information	Robocraze, Ground Floor, 912/10 Survey no. 104 4th G street, Chelekare, Kalyan Nagar, Bengaluru - 560043, Contact: +91 812 3057 137
Part Number	8CH_ULN2803_RELAY_BOARD
Specification Met	Energy Rating

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