[Humanized Interface Design]This 4 Channel Relay Module with Humanized interface design, all interfaces can be directly connected through the terminal , very convenient. Four fixing bolt holes are provided. Standard interface that can be controlled directly by microcontroller (, 8051, AVR, , DSP, ARM, ARM, MSP430, TTL logic)
[Fault-tolerant Design]This 4 Channel Relay Module with Fault-tolerant design,even if the control line breaks,the relay will not move. Power indicator light (green), 4-way relay state indicator light (red).
[Stable Performance]The Relay Board adopt patch photocoupler isolation, strong driving ability, stable performance. current is 5mA. The module can be high or low by a jumper setting .The module uses genuine quality relay, normally open interfaces.
[after-sales service]As a responsible seller, we promise that Money Refund/ New Replacement and within 24h online answer to your any questions. If your have any product issues, please do not hesitate to us. We will satisfy you with our professional product and service! Sincere thanks for your support!
[More Choice] Relay module operating voltage is 5V,12V,24V for choice. Each of the module can be triggered by the high level or low level through a jumper setting.
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