About 1 Channel Relay Module without Optocoupler 

This is 1 Channel 5V Relay Module For Arduino PIC AVR DSP ARM. A wide range of microcontrollers such as Arduino, AVR, PIC, ARM, and so on can control it.
Each one needs 15mA – 20mA driver current and Equipped with high current relay: DC 5V / 10A, AC 250V / 10A
Standard interface that can be compatible with microcontroller.
Specification and Features:-

• 1 channel relay board
• Operating Voltage 5V
• Max Current: 20mA
• Relay Contact Current Capacity at AC250V: 10A
• Relay Contact Current Capacity at DC5V: 10A
• One normally closed contact and one normally open contact
• Triode drive, increasing relay coil
• High-impedance controller pin
• Pull-down circuit for the avoidance of malfunction
• Power supply indicator lamp
• Control indicator lamp
• Indicator for Relay output status
• Can Be controlled by various appliances & other Equipment With Large currents.
• Standard TTL Level logic controlled (AVR, Arduino, 8051, PIC, ARM)
• The module is compliant with international safety standards, control and load areas isolation trenches;