100% Brand New and High Quality
Size: 8.6mm x 12.3mm
Input voltage: DC 4.2 V-10 V
Output: 3.3 V, 800 mA
1.Boost modules or buck module indicate the operating voltage, Please donot
exceed operating voltage , or it will be damaged easily !
2.Boost module output voltage can only be greater than or equal to input
voltage, cannot be less than the input voltage!
3.Buck module input voltage must be higher than output voltage of 1.5V or 2V,
otherwise it can not output enough power!
4.Automatic Adjustable Boost or Buck module has start voltage and limit
working voltage, Please donot exceed them , or it will be damaged easily !
5.Cannot reverse polarity , or it will be short circuit, or will be born
5 Pcs Step-down modules
1. We only accept payment via PayPal, other payment is not acceptable.
2. If you don’t have PayPal account, please register through
https://www.paypal.com before you bid our items.
3. Please make sure your shipping address is the same of your eBay address
before you pay. We will not be responsible for such a case if you change you
shipping address as we have shipped your items out.
1. We only ship to confirmed eBay address, your eBay address must match your
2. All items are available for shipping within 1-3 business days after
receiving the payment. Please be aware that weekends are not business days.
3. Any non-received items caused by invalid address registered on PayPal are
not in our full refund or replacement policy. Shipping fee has including the
local handing and packaging fee.
4. We are unable to take any responsibility for any custom delay or tax,
Reason is because transit time is highly depended and provided by postal
Service( Except weekends and holidays.)
1. If you are not satisfied with the item, please return it within 7 days for
a replacement or money back. Please contact me before you return it.
We are 100% Satisfaction Guarantee to our customers.
2. All returned items MUST BE in the original packaging with all components
and accessories included, And you MUST provide us the return shipping
information The shipment or the tracking number）.
3. Returned shipping fee is to be paid by the buyers. We will not responsible
for any custom duty or import tax. Thank you for your understanding.
Our working time:
Beijing time : Monday to Saturday 8:30 am to 5:30 pm.
If you send email to us,In our working hours will be resumed within 24 hours.
If you we are not satisfied with the product or service ,please contact me
and don't give us negative or natural feedback,We must give you a satisfactory
I hope all of us try together to create a better environment for shopping
On 04-Sep-21 at 12:12:15 EDT, seller added the following information: