Bluetooth 4.0 HM-10 Master Slave Module

Omron 5V solid-state relay (240V, 2A), output port with resistance-type fuse (240V, 2A)  Size: 57 x 55 x 25mm  Input power source: 5V DC (160MA)  Input Voltage of Control Signal: 0-2.5V (low-level state), the relay will be on; 3-5V (high-level state), the relay will be off.  Specification DC +: connected to the positive power source (supply power according to the relay voltage)  DC -: connected to the negative power source  CH1: 1-channel relay module signal triggering end (effective at low level)  CH2: 2-channel relay module signal triggering end (effective at low level)  CH3: 3-channel relay module signal triggering end (effective at low level)  CH4: 4-channel relay module signal triggering end (effective at low level)