Features 1.OPTOCOUPLER ISOLATION: Working voltage for 5V, this 5V relay module is 1 channel isolated type, each relay can be turned on or off individually by opto isolated digital input 2.WIDE APPLICATION: This relay module board is used for PIC AVR 51, supports full microcontroller control, industrial cycle, PLC controller, home intelligent control 3.TECHNICAL PARAMETERS: The maximum contact of relay output is AC250V 10A and DC30V 10A, possess stable structure and excellent performance 4.RELIABLE TRIGGER: The design of the module is fault tolerant, even if the control line is disconnected, the relay will not act; with optical coupling isolation, the triggering is more reliable and stable 5.SCRATCH RESISTANT ABS: 1 Channel relay module adopt excellent ABS material, possess impact resistance, scratch resistance, environmentally friendly Specification Item Type: 1 Channel Relay Module Material: ABS Package List 5 x 1 Channel Relay Module