ITEM NAME:NE555 frequency adjustable pulse generator module NE555 chipL Hn Description: 1. Onboard NE555 IC. 2. Single channel signal output, the output duty cycle about 50% square wave. 3. Plate load resistor, adjust the resistance to control the output frequency. 4. Onboard power indicator. 5. Working voltage: 5V~12V. 6. Size: 3*1.5cm Note: 1. Different displays and light sources may cause color deviation 2. The size is manually measured, there is an error of 1~5mm.Onboard NE555 IC. Single channel signal output, the output duty cycle about 50% square wave. Different displays and light sources may cause color deviation. Size: 3 1.5cm.