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4 channel relay module HLK-SW04
Retail Price:$12.00
Wholesale Price:$9.90


Hlk-sw04 is an industrial-grade 4-way network relay that enables users to remotely control device switching on and off. The core board of the product is M50, an embedded serial port to WiFi pass-through module developed by our company

Basic parameters

Web standards:
rateWireless standard: IEEE 802.11n/g/b
Wireless transmission rate:
11n: up to 150Mbps 11g: up to 54Mbps 11b: up to 11Mbps
Channel number:
Frequency range:
Launch function:
The interface type:
Serial port /1 USB(host)/GPIO


Service voltage DC5-24V Input wide voltage 
Relay output contact isolation
Output 4-way relay, each path can be set to one of two working modes: normal and click 
Each path have a separate key switch 
The master control is the high performance-price ratio embedded serial port WIFI transmission module HLK-M50
Support multiple platforms such as Android,IOS and PC end
Each path can be set timing and up to 10 groups
Rich connection mode and distribution mode, support AP direct connection, support LAN and remote control
support AP distribution network and one-click configuration;

Note:we always sent the docuemnt  by emails or online ,Please leave message to me if you need the instruction and software instead of dipute,if you are mind of this,please choose other product instead,thank you for your kind cooperation!


Packing List

1* HLK-M50 wifi  module ,

1*pcb antenna,

1* 4 channels test board ,

1* 5V 1A power supply 





1.What is the main module'name ?

--HLK-M50 serial wifi module

2.what is numbers of channel in total?

--4 numbers

3.Do you support OEM and ODM?

---Yes,dear,we are manuafacture.

4.Do you support user manual and other document?How about the tech support?

-Yes,we have a professional R&D team,we provide you professional tech support

5.Is sample avalible?What is the MQQ?

-Yes,dear,we support the sample,but you need to pay the sample fee and deliver charge.

6.What will the Price be when bulk order is needed?

--Our Price varies with your quantity,the more you ordered,the less the price is.

7.What is the lead time?

--Within 100,2 working days.

8.How can I find you if we have questions?

-You can send mail to me,or add my skype:hlktech .



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