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AJMRTC EWB4CHD1 EWelink WiFi Bluetooth Smart Switch Receiver, AC85250V & USB 5V DualPower 4Channel Dry Contact Relay Module, APP OnOff Remote Control for Home Automation & Industrial DIY Project
- 1. EWB4CHD1 smart relay receiver works with EWelink APP, dualpower supply supports AC 85250V mains power or USB 5V power input for flexible installation options.
- 2. 4channel potentialfree drycontact output with NO/COM/NC terminals, isolates control side and load side, fits for controlling various thirdparty devices without voltage restriction on output terminals.
- 3. 2.4GHz WiFi + Bluetooth dualmode connection; keeps local Bluetooth control available even when WiFi network drops, supports mobile APP remote onoff operation.
- 4. Multiple working modes including selflocking, jog / inching, timing delay and cycle timing function; compatible with Alexa and Google Home voicecontrol for smarthome scenarios.
- 5. Equipped with status indicator LEDs for signal and relay state, widely used for light modification, motor control, accesscontrol equipment, industrial automation and DIY smartdevice renovation.
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Overview
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AJMRTC EWB4CHD1 EWelinkenabled smart switch receiver is a 4channel drycontact relay module for smarthome and industrialDIY automation. It supports two powersupply solutions: AC 85250V widevoltage mains input or convenient USB 5V power supply, adapting to different fieldsite powersupply conditions. Every channel provides potentialfree drycontact output (NO / COM / NC), so users can switch external loads of different voltage classes without commonground limitation between module and controlled equipment. Builtin WiFiBluetooth dualwireless design, it can be controlled remotely via EWelink APP. When WiFi is offline, local Bluetooth connection still allows mobilephone onoff control. It supports selflocking, joginching, delay trigger and cyclic timing, and works with Alexa & Google Home voiceassistants for handsfree operation. Onboard indicator lights clearly display network connection and relay working status. Suitable for lightsystem refitting, smallmotor switching, accesscontrol linkage, industrialequipment modification and various embedded automation projects. Please disconnect power before wiring; this device is designed for 2.4GHz WiFi network only.
Specifications- Brand: AJMRTC
- Model: EWB4CHD1
- Control APP: EWelink
- Power Input: AC 85250V or USB 5V
- Wireless: 2.4GHz WiFi + Bluetooth
- Channel Quantity: 4Channel
- Output Type: DryContact Relay (NO / COM / NC)
- Working Modes: Selflocking, Jog / Inching, Timing, Cycle Timing
- Voice Compatibility: Alexa, Google Home
- Indicator: Network Signal LED & Relay Status LED
- Application: Home Automation, Light Control, Motor Switch, AccessControl, Industrial DIY Retrofit
- Note: Only support 2.4GHz WiFi; cut off power supply during wiring operation
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by ThermalNest Return Policy
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