SmartGen HEM4100 Relay Speed Regulation Output + Canbus Interface

Shipping Policy

Some of our products are free shipping. For details, please refer to the product details page. The free shipping areas are as follows: United States, Canada, Australia,New Zealand.

1. Processing time
Usually shipped within 3 business days after payment is received.

2. Delivery Time:
Expedited Shipping(FedEx/DHL):To USA/Canada 3-5 working days, to other countries 3-8 working days.
Expedited shipping by UPS: 4-7 working days.
Free shipping(USPS/Other expresses): To USA/Canada 7-10 working days, to other countries 7-15 working days.

This is normal condition , but sometimes int'l delivery is highly depended on the courier company and local customs/duties.

3. Shipping Charge
Shipping costs are calculated by weight and country. Different products and addresses will have different shipping charges. You can view it on the shopping cart page.

This is part of the shipping cost based on weight:
Expedited shipping by DHL/FedEx (0.1kg–0.5kg) $15.90 USD
Expedited shipping by DHL/FedEx（0.51kg–1kg) $19.80 USD
Expedited shipping by DHL/FedEx (1.01kg–1.5kg) $25.80 USD
Expedited shipping by DHL/FedEx (1.511kg–2kg) $31.80 USD
Expedited shipping by DHL/FedEx (2.01kg–2.5kg) $37.80 USD

4. Eligible conditions for the free shipping policy: US/Canada, orders over $15.00 can enjoy free shipping.

Can I return an item that is defective,damaged,or I just don't want?  

Please contact via email info@wdpart.com, chat in store, request a return or exchange label or call +86-13456396317.

WDPART offer 30-day guarantee on receipt, which means you can request a return within 30 days after your ordered. WDPART must be informed of any return requests within 30 days of the date the customer placing the order. For Warranty products (Replacement parts only.Original parts are of no return) returns follow instructions.

Please Contact us for Return in 30 days.
Please note parts must be in new condition. Parts will not be accepted for return if they have been installed or not in new condition.

PLEASE NOTE: Genuine/Original parts do not provide return or exchange service.

Return/Exchange Steps:

Please Contact via email info@wdpart.com, call +86-13456396317 Request a return label and state the reason for your return.
1.We have warehouses in USA and China,please contact us first for return or exchange. Contact via email info@wdpart.com, call +86-13456396317.
2.We will send you the return adddress after confirmation then please waiting for the return.
3.After we receiving the return and checking the package that there is no problem,we will resend the order or make refund.

Refund processing time:
We will issue a refund within 1-3 working days after confirming receipt of the return package.
1. Refund via Paypal will be received within 1-2 days.
2. Credit card refunds will be received within 5 days. (We will send you a refund voucher, the specific processing time is subject to the bank)

How to check freight?

Get shipping by adding the item into your shopping cart or check below. Estimated delivery time will depend on shipping service selected and receipt of cleared payment. Delivery times may vary.

What is the item warranty?

This part(s) is guaranteed to be free from defects and is covered by our Hassle Free One-Year Warranty, unless otherwise stated in Parts. 

What happens if the item I ordered is not available? 

On occasion, an order may be delayed due to availability or other circumstances.  In the event there is a change or delay in filling your order, we will notify you via phone, mail or email.  We know that this can be inconvenient, so we offer one of the following alternatives as appropriate to your situation:
(1) Offer a BACK-ORDER and new estimated delivery date.  You can wait for the new delivery or cancel the order for a full refund at any time prior to shipment.

(2) CANCEL your order.  In rare situations, new circumstances may come to our attention after the placement of an order.  Therefore we reserve the right to cancel your order for a full refund at any time.

How long does it take to ship out of the warehouse?

Orders ship out within 48-72 business hours on average. Due to the COVID-19 pandemic, please allow for some shipments that require additional transit time.

How can I get my items if I have a list to order?

Please email us about your item list. We will response you within 12 hours.

How long does delivery to my address take?

Delivery is determined by the type of shipping you go with. Normally, all orders are delivered within 3-7 business days. Many things can play a factor such as Location, Weather, and the items in the order. If you have any questions, please reach out to us before ordering. 

How can I track my order?

You will receive an email with your carrier and tracking number. With tracking number or order number you can track the progress for your purchase. You can track your shipments at our website TRACK YOUR ORDER.

How can I get in contact with a sales representative in my area?

Contact us HERE.