KEDSUM® 5V 1 One Channel Relay Module Expansion Board For Arduino SCM ARM PIC AVR DSP

Description
The module is triggered, high trigger current less than 5mA, part of the 51 single-chip IO port output capability is weak, pull or increase the drive capability of the circuit.
The advantages of the high drive control line disconnection, the load will not work, as security.
1, 5V relay
2, can be used as a microcontroller development board module can be used as a home appliance control
3,5 V-5v TTL control signals
4, control DC or AC signal can control the 220V AC load.
5, a normally open and one normally closed contact
6, a power indicator
7, control light, bright pull, disconnect does not shine
8, the increase in transistor drive a relay coil, control pins high impedance.
9, the control pins with pull-down circuit, prevent floating relay malfunction
10, high quality, pin colors (black, yellow) were shipped.
11, blue KF301 terminal control measure and easy to wire
12,4 positioning screw hole diameter 3mm center hole spacing of 20mm x 40mm
13, compact circuit board, size: 46mm x 26mm 20mm
Package List:
1 * 5V 1 One Channel Relay Module