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Most signal lights we saw in our daily life use LED as their major light source
With power indicator
4inchResolution 320 x 240Built-in Sensors Buzzer
Greenhouse Monitoring System
8 Channel Low Level Relay Module with light coupling DC5V CR10V2 Most signal lights we saw5V 8 Channel Relay interface board, each one needs 70mA Driver Current; Equipped with high current relay, AC250V 10A; DC30V 10A Each relay has normally open and normally closed contact. Can be selected by jumper relay and TTL or ground. With power indicator,8 way road has a status indicator. With a relay coil to absorb the diode protection. Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM,
US$ 15.90
US$ 114705.00
US$ 14602.50
US$ 39.90
US$ 15.90
US$ 15.90
US$ 15.90
