The Pedal Assist Sensor (PAS) is a replacement component compatible with DTTZH A12 and A12S electric bikes. It detects pedal movement and sends signals to the bike's electrical system to support pedal-assist operation while riding.
This sensor is suitable for replacing a faulty or damaged PAS component when the pedal-assist function is not working properly. Before ordering, check the sensor connector and compatibility with your bike's electrical system.
Compatibility: DTTZH A12 / A12S
Part Type: Pedal Assist Sensor (PAS)
Function: Detects Pedaling for Pedal-Assist Operation
A12/A12S pedal assist sensor (PAS)
Shipping Info:
Where we ship from:
West: Walnut, CA (91789)
East: Robbinsville, NJ (08691)
Shipping: Free within the contiguous U.S. (excluding Alaska and Hawaii).
Complete eBikes are shipped via FedEx.
Batteries, racks, and other accessories are shipped from U.S. warehouses via FedEx or UPS.
Where we deliver: Most regions worldwide. For logistics fees in your area, check with customer service first.
Note: Extra costs from customer-caused address changes or delivery failures are your responsibility.
How long it takes:
Ships within 48 hours—including weekends.
Track your order: We’ll email a tracking number after shipping. Use it on the logistics company’s site to check progress.
Quick tips:
Double-check your address (street, number, contact) to avoid delays.
Inspect packaging on delivery—refuse if damaged, and contact us right away.
Returns:
Quality issues (damaged parts, malfunction, etc.): Request within 7 days of receipt. Product must be unused with intact packaging.We’ll cover the return shipping.
Personal reasons (style/color dissatisfaction): Request within 7 days. Product must be brand-new, unused, with complete packaging/accessories (to allow resale). You’ll cover the return shipping.
⚠️ International Orders (Outside the Contiguous United States):
Please note that all international orders shipped outside the contiguous United States are subject to a $350 USD non-refundable shipping fee and a $200 USD processing/handling fee.
Once an international order has been dispatched and tracking information is generated, the shipment cannot be cancelled or intercepted. For any returns due to personal reasons (including but not limited to: change of mind, buyer’s remorse, incorrect selection, or refusal of delivery), the customer is fully responsible for all round-trip shipping costs (including both the original outbound shipping and the return shipping fees) as well as any associated customs duties, taxes, and brokerage fees incurred during transit. These expenses will be strictly deducted from the final refund.
Exchanges:
Non-human quality problems: Exchange for the same model within 15 days of receipt (after inspection).
Size/model mismatch (not your fault): Exchange within 7 days. We cover round-trip shipping.
How to process:
Contact our customer service (hotline/online) with your order number, reason, and product photos.
We’ll review and reply within 24 hours. Approved, We’ll send the return/exchange address.
Ship the product back (mark order number & reason) and keep the tracking number.
We’ll inspect within 3-5 workdays. Eligible returns get a refund; eligible exchanges get a new product shipped promptly.
Refunds:
Processed via your original payment method, usually credited within 3-7 workdays (depends on your payment platform).
What’s covered (and for how long):
Major parts (under normal use, for quality issues):
Frame, motor, battery, controller: 1 year
Note: Battery warranty doesn’t cover normal capacity loss.
Other parts: 3 months
Not covered: Tires
Warranty starts: Begins on the date your product leaves our warehouse
What we provide:
Within the warranty period, we’ll repair or replace faulty parts for free (if conditions are met).
Note: Doesn’t cover indirect losses from product issues.
What’s not covered:
Damage from accidents, disassembly, modification, or improper use (e.g., wrong charger, harsh environments)
Expired warranties
Normal wear, scratches, or damage from natural disasters
How to get warranty service:
Contact customer service with your order number, photos, and fault details.
Our team will check; if eligible, we’ll guide you to send it back or arrange an inspection.
Approved issues: We’ll repair/replace for free and send it back.
Not eligible: We’ll share a repair plan and cost—we proceed only with your okay.
During payment, you might see an extra international fee. You can avoid it by switching to a major bank's credit card.If payment fails, it's normal. Try a few more times.If payment fails, it's normal. Try a few more times.
This vehicle is manufactured as a Class 2 Electric Bicycle compliant with US Federal Law (16 CFR Part 1512) and state-level regulations, featuring a factory-limited top speed of 20 MPH for street-legal operation.
Any performance-enhancing modifications, software unlocks, or usage of high-power "Off-Road Modes" that exceed local speed and wattage limits are intended exclusively for use on private property or designated closed-course tracks. Operating a modified vehicle on public roads, bike paths, or trails may violate local laws, lead to vehicle impoundment, and void your warranty. The user assumes all legal and safety risks associated with such modifications. Ride responsibly and always wear a helmet.