PCBA/Module

6,250 products

DC7-28/5V power supply WIFI Bluetooth dual-channel 30A relay development board ESP32 secondary development

$10.15

2-way time relay module 5V12V24V programmable optocoupler isolation pulse cycle power-off trigger

$3.35

5V Relay Module with Optocoupler Isolation 4 Channel 6 Channel 8 Channel 16 Channel Relay Module Low Level Trigger

$0.62

Modbus 1/2/4/8-Channel Relay Module Digital Input Output RS485/TTL Communication

$1.92

3.7V to 9V 5V multimeter modified 18650 lithium battery charging, boosting and discharging integrated adjustable module 2A

$0.37

ESP32-S3 6-Channel WiFi Network Relay Module Supports WiFi/Bluetooth/RS485/Pico Interface

$36.46

Industrial grade Modbus RTU optocoupler isolation RS485 rail 1/2/3/4/8-way relay ABS shell

$10.85

Brand new original super light automotive relay CG-12F 24V pure copper wire high power waterproof car with 5 feet 80A

$0.69

Hongfa Relay JQX/HF105F-4-005D 012D 024D 220A-1HS 1ZS 1HST 1ZST

$1.06

1/2/4/8 Channel Solid State Relay Module 5A High-Level Single-Phase PLC Controller Automation Intelligent

$3.92

Multi-channel relay module (WS0410~WS1610 series) 4-channel, 6-channel, 8-channel relay module wholesale

$9.23

R001751 RV Relay for PopUp Camper RV 12V relay car DC

$18.23

One-way high-power relay module optocoupler isolation high and low level trigger 5V/12V/24V30A YYG-2

$3.23

4-channel Relay Module Optocoupler Isolation 5v 12v 24v High Low Level Trigger Plc Drive Control Board Module

$1.78

Driverless/USB control switch, 1/2/4/8 channel relay module/computer control switch/PC intelligent control

$3.55

DC7-60/5V power supply WIFI Bluetooth single-channel 30A relay development board ESP32 secondary development

$8.54

RB-R6F6S-W1 12V Waterproof Automotive Relay Box with Wire Pre-Wired Waterproof Car Fuse Box

$14.54

8-Channel 12V Computer USB Control Switch Driver-Free Relay Module PC Smart Controller Red Board

$6.18

Modbus-RTU 1/2/4/8-Channel Relay Module Switch Input/Output RS485/TTL Communication

$2.26

3SK1111-1AB30 Siemens safety relay screw terminal connection automation module

$163.85

5V 1/2/4/6/8 channel relay module Optocoupler supports high level and low level triggering

$0.38

Relay module 5/12/24V optocoupler isolation 1/2/4/8-channel high/low level trigger development board microcontroller

$0.60

1-8 Channel 5V 12V 24V Relay Module with Optocoupler Isolation Strong Anti-Interference Optocoupler Isolation Module

$0.67

1248-channel 5V12V24V relay module with optocoupler isolation development board supports high and low level trigger power

$0.81

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