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Elecbee 1-Channel 3.3V Relay Module with Optocoupler Isolation 10A 250VAC 30VDC High-Load Controller for ESP32 and Raspberry Pi Black PCB

SKU: EB0046121
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Key Features

Enhanced Circuit Protection: Integrated 817c optocoupler provides complete electrical isolation between your microcontroller and high-power loads to prevent back-EMF damage.

Native 3.3V Logic Support: Specifically designed for low-voltage systems, allowing direct connection to ESP32, Raspberry Pi, and STM32 without external level shifters.

Heavy-Duty Switching Capacity: High-quality 5-pin SPDT relay manages loads up to 10A at 250VAC or 30VDC with a mechanical life exceeding 100,000 cycles.

Rapid Signal Response: Features a switching speed of less than 20ms and integrated diode freewheeling protection for high-frequency automated applications.

Industrial-Grade Wiring: Equipped with heavy-duty screw-down terminals for secure connections and pre-drilled mounting holes for stable panel integration.

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Specifications
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Attribute
Value
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MCU/SoC Model
1-Channel 3.3V Relay
CPU Architecture
ESP32
Wireless Capability
Xtensa LX6
Memory
ESP-IDF/Arduino
Bluetooth Version
240
Power Protection
3.3V/250V
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Description

This module solves the common issue of signal interference and potential voltage spikes by utilizing 817c optocoupler isolation, ensuring your delicate ESP32 or Raspberry Pi remains protected while controlling heavy-duty machinery or home automation lighting. Its anti-interference design and diode freewheeling protection make it a reliable choice for mission-critical switching tasks.

Engineered for versatility and ease of use, this black PCB relay board fits easily into compact enclosures. The technical specifications include:

  • Trigger Voltage: 3.3V DC (Direct MCU Output Compatible)
  • Contact Rating: 10A 250VAC / 10A 30VDC
  • Main Components: 817c Optoisolator and 5-pin SPDT Relay
  • Dimensions: 56.5mm x 16.8mm x 20mm
  • Safety Features: Onboard signal indicator and diode protection

The industrial-grade construction of this module features screw-down terminals for secure 10A current handling and pre-drilled fixed mounting holes for professional panel integration. With a mechanical life exceeding 100,000 operations and a switching speed under 20ms, it is optimized for vibration-resistant performance in smart home controllers, industrial PLCs, and IoT automation projects. This module is the professional choice for developers seeking a 3.3V logic compatible switching solution.

Two module interface:
1. DC+: Connect the power supply positive pole (voltage 3.3V).
2. DC-: Connect the power negative pole.
3. IN: Low level (3.3V) control relay pull in.
Relay output terminal:
1. NO: Relay normal open, the relay suspends before pulling in, and then short-connect with the COM.
2. COM: Relay common interface
3. NC: Relay normal close, short connected with COM before pulling inand suspended after pulling in.
 
Package including:
 1 x 1 Channel 3.3V Relay Module
 
 
 
1-Channel-33V-Low-Level-Trigger-Relay-Module-Optocoupler-Isolation-Terminal-BESTEP-for-Arduino---pro-1355736

1-Channel-33V-Low-Level-Trigger-Relay-Module-Optocoupler-Isolation-Terminal-BESTEP-for-Arduino---pro-1355736

1-Channel-33V-Low-Level-Trigger-Relay-Module-Optocoupler-Isolation-Terminal-BESTEP-for-Arduino---pro-1355736

1-Channel-33V-Low-Level-Trigger-Relay-Module-Optocoupler-Isolation-Terminal-BESTEP-for-Arduino---pro-1355736

1-Channel-33V-Low-Level-Trigger-Relay-Module-Optocoupler-Isolation-Terminal-BESTEP-for-Arduino---pro-1355736

1-Channel-33V-Low-Level-Trigger-Relay-Module-Optocoupler-Isolation-Terminal-BESTEP-for-Arduino---pro-1355736

1-Channel-33V-Low-Level-Trigger-Relay-Module-Optocoupler-Isolation-Terminal-BESTEP-for-Arduino---pro-1355736

1-Channel-33V-Low-Level-Trigger-Relay-Module-Optocoupler-Isolation-Terminal-BESTEP-for-Arduino---pro-1355736

1-Channel-33V-Low-Level-Trigger-Relay-Module-Optocoupler-Isolation-Terminal-BESTEP-for-Arduino---pro-1355736

1-Channel-33V-Low-Level-Trigger-Relay-Module-Optocoupler-Isolation-Terminal-BESTEP-for-Arduino---pro-1355736
Shopping Guide
Shipping
Delivery Period
Elecbee ships orders once a day at about 5pm except Sunday.
Once shipped, estimated delivery time depends on the below carriers you chose.
Express: 3-7 days.
Standard Post: 7-20 days.
Shipping RatesShipping rates for your order can be found in the shopping cart.
Shipping OptionsWe offer express and standard delivery services.
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Returning/WarrantyReturningReturns are normally accepted when completed within 30 days from date of shipment, please contact customer service for a return authorization. Parts should be unused and in original packaging. Customer has to take charge for the shipping
WarrantyAll Elecbee purchases come with a 30-day money-back return policy, plus 1-year Elecbee warranty against any manufacturing defects.
This warranty shall not apply to any item where defects have been caused by improper customer assembly failure by customer to follow instructions, product modification, negligent or improper operation
OrderingHow to BuyElecbee accepts online orders.
Add to cart > Check out > Submit order > Complete payment > Delivery
PaymentPayPal, Credit Card includes Visa, Master, American Express, Bank transfer.

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In-Stock
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Unit Price
$ 0.68$ 0.80
Ext. Price
$ 0.68$ 0.80
$ 0.68$ 0.80