Solar Attic Fans: July 2021

Dual-H-bridge motor driver: can drive two DC motors or one bipolar stepper motorDS3231 IIC precision Real time clock module memory module Arduino
Clock chip: high-precision clock chip DS3231, 2 programmable time-of day alarms.
Operating voltage :3.3 - 5 .5 V needs CR2032 Battery (not included)
Memory chips: AT24C32 (storage capacity 32K)
Size: 38mm (length) * 22mm (W) * 14mm (height) Weight: 8g

Simple installation, low cost implementation of intelligent visual astern.
The U.S. H.264 chips with clear and smooth images.
High power WIFI module, strong signal, long transmission distance.
Through the device end to watch in real time, after entering the rear view video, you can watch in real time. View the reason behind the vehicle and view from the whole perspective.
It has functions of the intelligent electronic rearview mirror and forward-looking. It can be installed in front, rear, left and right visual blind area, and the software can be opened for real-time monitoring.

Micro USB lithium ion / lipo / 18650 battery charging board , built-in TP4056 chip, set charging and battery over-charge over-discharge over-current protection all in one practial for your DIY 18650 battery power supply to prolong its lifetime.
Input Voltage: DC5V, Charging Cut-off Voltage: 4.2V±1%, Maximum Charging Current: 1A
On-board micro USB and soldering joints 5V input port and charging status indicator (red indicator is charging, green or blue indicator is full charged)
Battery Over Discharge Protection Voltage: DC2.5V, Battery Over Current Protection Current: 3A
Package included 10 pcs TP4056 Micro USB 5V 1A 18650 lithium battery charger board

Solar Attic Fans