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This SPST solid-state relay module allows for safe switching of DC circuits up to 30 V and 11 A, offering galvanic isolation and low conduction resistance (approx. 30 mΩ) thanks to the use of back-to-back MOSFET transistors. It features fast switching time (up to 1 ms), low control current consumption (approx. 10 mA), and the ability to control a signal from 2.7 to 40 V. Its compact design, lack of mechanical components, and the ability to mount on 2.54 mm connectors or screw terminals make the module a durable and quiet solution for systems requiring reliable insulation and long service life. Pololu 5421
The solid-state relay (SSR) module, SPST type, is a modern solution designed for switching DC circuits on and off based on a control signal in the range of 2.7 to 40 V. Thanks to galvanic isolation between the control circuit and the output, it is safe and resistant to interference. Switching is handled by two back-to-back MOSFET transistors, providing bidirectional current flow and symmetrical output, allowing the module to be used as either a high-side or low-side switch. This version supports currents up to 11 A at voltages up to 30 V, and the total ON-state resistance is about 30 mΩ, minimizing energy losses. The switching time (on and off) is a maximum of 1 ms, ensuring a fast response in most applications.

Thanks to its solid-state design, the module eliminates typical drawbacks of mechanical relays, such as contact wear, sparking, and noise, while offering a compact form factor and silent operation. The control circuit consumes up to 10 mA and can be powered and activated through a single connection (by shorting EN and VIN). The signal pins have a 2.54 mm pitch, making it easy to use with breadboards, while the output provides solder pads for wires or the option to connect 3.5 mm or 5 mm screw terminals. The module has a small size and weight, making it ideal for projects with limited space. It is perfect for power switching in systems requiring signal isolation, as well as for hobby and professional applications where reliability and long life are critical.
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
2-channel module with relays designed to work with the Raspberry Pi Pico. It can switch signals up to 120 V AC or 24 V DC and currents up to 2 A. SB Components 21376
2-channel module with relays designed to work with the Raspberry Pi Pico. It can switch signals up to 250 V AC and 7 A or 30 V DC and 10 A. SB Components 21284
4-channel module with relays designed to work with the Raspberry Pi Pico. It can switch signals up to 250 V AC and 7 A or 30 V DC and 10 A. SB Components 21178
The module is dedicated to home automation based on the Raspberry Pi. It allows you to control two devices 250VAC/7A or 30VDC/10A, providing isolation with an optocoupler. SB Components 21932
8-channel module with relays, designed to work with the Raspberry Pi. It can switch 250VAC/7A or 30VDC/10A signals. With LCD 4,3" display. SB Components 21871
8-channel module with relays, designed to work with the Raspberry Pi. It can switch 250VAC/7A or 30VDC/10A signals. SB Components 21871
4-channel module with relays, designed to work with the Raspberry Pi. It can switch 120VAC/2A or 24VDC/2A signals. SB Components 14071
2-channel module with relays, designed to work with the Raspberry Pi. It can switch 250VAC/7A or 30VDC/10A signals. SB Components 14088
The module with 4 relays, designed to work with the micro:bit. It allows you to control devices with operating parameters up to 120VAC/2A or 24VDC/2A. SB Components 14118
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Module with the SLA-05VDC-SL-C relay with a maximum load of 30 A. The board is equipped with a Grove connector and is controlled by a digital signal. Seeed Studio 103020012
The module with 4 relays is designed to work with Arduino. It allows you to control devices with operating parameters up to 250VAC/7A or 30VDC/10A. Seeed Studio 103030009
The module with 2 relays is designed for the M5Stack sets. It allows you to control devices with an operating voltage of up to 250 V AC and a current of up to 8 A or a voltage of 28 V DC and a current of 8 A. M5Stack U131
The module with the relay is designed for the M5Stack sets. It allows you to control devices with a working voltage of up to 220 V AC and a current of up to 3 A or a voltage of 30 V DC and an intensity of 3 A. M5Stack U023
Module with 5 V relay with a maximum switching current of 2 A. It communicates via the USB interface and does not require an additional power supply. Numato Lab USBPOWRL002
Module with SSR relay with a load of up to 3 A. It communicates via the USB interface and does not require additional power supply. Numato Lab SSRP20001-DC
Module with SSR relay with a load of up to 3 A. It communicates via the USB interface and does not require additional power supply. Numato Lab SSRP20001-AC
This SPST solid-state relay module allows for safe switching of DC circuits up to 30 V and 11 A, offering galvanic isolation and low conduction resistance (approx. 30 mΩ) thanks to the use of back-to-back MOSFET transistors. It features fast switching time (up to 1 ms), low control current consumption (approx. 10 mA), and the ability to control a signal from 2.7 to 40 V. Its compact design, lack of mechanical components, and the ability to mount on 2.54 mm connectors or screw terminals make the module a durable and quiet solution for systems requiring reliable insulation and long service life. Pololu 5421