Regarding the green ruler on the display, it exists in the camera. All cameras have parking lines. If you don’t want a parking line, you need to purchase a camera without a parking line.
simple installation is only suitable for the installation of a camera, if you want to install two cameras, you can only choose the standard installation, and then buy an AV interface camera
U-type display features:
Suitable for all kinds of large machinery, trucks, buses and so on
U-type anti-shake HD display
120 degrees wide-angle, can see farther, infrared auto-sensing, all-metal shell, waterproof and dustproof anti-shake
Provide two kinds of installation options
1： standard installation, you need to know how to find the reversing light positive, A connect reversing light positive, B connect ACC
2：Easy Installation: You only need to know where the cigarette lighter is
Importance:
1.If the item indeed has any probelm,Please take a picture or video for us to confirm, We can refund you no more than 50% of the sales amount. and you don't need to ship the item back,because we are free shipping and the shipping fee takes up at least 50% of the sales amount.
2. We usually process your order in the next 24-72hours after you pay, it is better you check your email during this time if we have other information needed from you.
3. We cannot deliver to P.O Box's & we cannot deliver without your contact phone number.
4. To make sure the telephone and address 100% correct , we'll only deliver to the address you leave in aliexpress syste
Delivery:
Delivery will be arranged within 2 business days after payment is cleared as long as buyer’s information and shipping address is confirmed. Please provide the right post code and valid phone number to avoid delay in shipping.
1) If buyer need the parcel to be delivered by certain courier or other express way, please contact our sales to adjust the price before payment.
2) Small package within 2.0kgs will be shipped by China post air mail or HongKong Register mail . Usually, it takes 15-25 business days to the major destination of the world. UPS,DHL or EMS are also available.
3) We don’t ship to APO/FPO, P.O BOX addresses.
4) Remote area fee excluded, for addresses listed in the remote areas on DHL/UPS website, will be charged an extra US$30.
5) On Way Time (for reference only) 
Import Tax:
We are NOT responsible for ANY import tax, custom fee or customs delay. If the parcel is return back to us due to the buyer’s refusal to pay the above fees, we would NOT resend the parcel until the buyer complete those fees and pay ALL the return and resend cost. Buyers can not cancel the order or request refund based on the above reason.
We will try our best to help our buyers to minimize the risk of paying the taxes. As our experience, 90% can reach to the buyer without paying any taxes, such as stating the item as sample or gift, but you still find the price is lower than standard even you are chosen to pay the customs!
Return and Warranty:
All items are brand new straight from the factory. In case you receive a faulty item, please contact us within 3 days after sign on the receipt. We will refund or replace it.
Return within 7 days after receipt can be refund (exclude shipping freight)
Return within 20 days after receipt can be replaced.
Return within 1 year from the purchase date can be repaired.
It is the customers? responsibility to pay for return postage and ship the item back to us. We will send it back at our cost.
All returns must be confirmed by our after service staff, we are not liable for any return package without prior notice.
For non-defective returns, there will be administrative fee applied.
We offer ONE Year Factory Warranty (accessories not included).
Warranty will be voided as of:
(1) Damage caused by: Undue wear & tear, dirt, misused, improper installation or operation, neglect, accident.
(2) Any damages caused by improper packaging when buyers return the item to us.
(3) If the item was disassembled or repaired by unauthorized person.
Feedback:
Customer's satisfaction is our ultimate goal. If you are satisfied with our products and service, please leave us 5-star feedback.If you have problem or question please contact us before open a dispute or leaving any type of feedback.
All messages or emails will be answered within one business day. If you do not receive our reply, please kindly re-send your email or complaint to our manager
