Features: This product is made of high quality PCB board, stable and durable. 16-channel USB serial port main control board, which is output by high-low level decoding of single-chip microcomputer microprocessor, and each line outputs 1520 mA drive current. Onboard MINI USB interface, stable connection, can be directly controlled by MCU (8051, AVR, PIC, DSP, ARM, MSP431, TTL logic and electrical equalization). High sensitivity, will not appear poor contact problem, you can rest assured to use. Carefully welding, precise hole position, complete functions. Specifications: Material: ABS Power: DC 5V Quiescent current: ＜10mA Package list: 1 x Relay Module Note: A0 01 01 A2 Open the First Way A0 01 00 A1 Closes the First Way A0 02 01 A2 Opens the Second Way A0 02 00 A1 Closes the Second Way A0 03 01 A2 Opens the 3rd Way A0 03 00 A1 Closes the 3rd Way A0 04 01 A2 Opens the 4rd Way A0 04 00 A1 Closes the 4rd Way A0 05 01 A2 Opens the 5th Way A0 05 00 A1 Closes the 5th Way A0 06 01 A2 Opens the 6rd Way A0 06 00 A1 Closes the 6rd Way A0 07 01 A2 Opens the 7rd Way A0 07 00 A1 Closes the 7rd Way A0 08 01 A2 Opens the 8rd Way A0 08 00 A2 Closes the 8rd Way A0 09 01 A2 Opens the 9rd Way A0 09 00 A1 Closes the 9rd Way A0 0A 01 A2 Opens the 10 Way A0 0A 00 A1 Closes the 10 Way A0 0B 01 A2 Opens the 11 Way A0 0B 00 A1 Closes the 11 Way A0 0C 01 A2 Opens the 12 Way A0 0C 00 A1 Closes the 12 Way A0 0D 01 A2 Opens the 13 Way A0 0D 00 A1 Closes the 13 Way A0 0E 01 A2 Opens the 14 Way A0 0E 00 A1 Closes the 14 Way A0 0F 01 A2 Opens