5V 1 One Channel Relay Module Low level for SCM Household Appliance Control for Arduino DIY Starter Kit

   The module uses genuine quality relay, normally open interfaces

   Using SMD optocoupler isolation, driving ability, stable performance

   The module can be high or low by a jumper setting trigger

   Fault-tolerant design, even if the control line is broken, the relay will not operate

   The power indicator (green), the relay status indicator (red)

   The interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient

   It is low level trigger when jumper connect to LOW pin

   It is high level trigger when jumper connect to HIGH pin