Single Channel 5v Relay Module with Isolation High Low Level Trigger (1 pcs)

1. this module is in line with international safety standard, control areas and load area have the isolation groove; 2. USES the loose quality goods relay; 3. have power and relay operation instructions, and bright, disconnect the dawn; 4. signal input signal, the public end and will often start conduction; 5. can be used as a microcontroller development board module, can be used as a home appliance control; 6. dc or ac signal control, can control 220 v ac load; 7. and one often opened a normally closed contact; 8. blue terminal line more convenient. Package include: 1 x 1 Channel Relay Module