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Uni-trend Voltage and Continuity Tester RCD Polarity Detection UT18C
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Uni-trend Voltage and Continuity Tester RCD Polarity Detection UT18C
The UNI-T UT18C is a robust and reliable voltage and continuity tester specifically designed for challenging environments where darkness, humidity, and rain are common. This series of waterproof testers ensures a high level of safety, making it an ideal choice for professionals. It is certified to CAT IV 600V and CAT III 690V for voltage measurement, protecting users from transient overvoltages. With an IP65 waterproof rating, built-in illumination, RCD testing, and three-phase AC phase rotation testing, the UT18C is equipped to handle various demanding troubleshooting and maintenance tasks.
Key Features
- IP65 Waterproof Rating: Ensures reliable operation in wet and dusty conditions.
- High Safety Standards: Complies with double insulation, CAT III 690V, and CAT IV 600V safety requirements, and CE European Union standards.
- Live/Neutral Wire Identification: Single test lead measurement can identify live or neutral wires.
- Three-Phase AC Phase Rotation Test: Indicates the phase relationship of three-phase AC power.
- Continuity Test: Provides both buzzer and LED light indications for quick and clear results.
- Polarity Indication: Displays the positive and negative polarity of the measured conductor voltage.
- RCD (Residual Current Device) Test: Used for testing leakage protection switches.
- Built-in Illumination: Integrated flashlight for working in dark or poorly lit environments.
- Battery-less Detection: Capable of basic detection without battery power for certain voltage ranges.
- Dual Mode Operation: Choose between buzzer and silent modes.
- Voltage Over-range & Low Battery Indication: Alerts users to extreme conditions and low power.
- Automatic Functions: Features auto standby, auto range, and auto power-on when voltage exceeds 12V.
- Self-Test Function: Ensures the device is working correctly with full LED or LCD display.
- LCD Display: Clearly shows voltage and frequency readings.
- Data Hold: Freezes the current measurement on the display.
Benefits and Applications
The UT18C series is engineered for maximum safety and efficiency in challenging electrical testing scenarios. Its high CAT IV safety rating provides crucial protection against electrical surges, while the IP65 rating guarantees durability in harsh weather or dusty industrial settings. Electricians, maintenance technicians, and DIY enthusiasts can leverage its versatile features for:
- Verifying voltage presence in circuits, outlets, and electrical panels.
- Identifying live and neutral wires quickly and safely.
- Testing three-phase motor connections and rotation direction.
- Checking for continuity in cables, fuses, and switches.
- Ensuring proper function of RCDs to prevent electrical hazards.
- Troubleshooting electrical systems in dark attics, basements, or outdoor environments thanks to the built-in light.
- Performing essential checks even when batteries are depleted, for increased reliability.
The UT18C’s automatic functions and clear LED/LCD indications streamline the testing process, making it a professional-grade tool for accurate and secure electrical diagnostics.
Technical Specifications
| Model | UT18C |
| Voltage Indication (V) | |
| 12V | 8V±2V |
| 24V | 18V±2V |
| 50V | 38V±4V |
| 120V | 92V±6V |
| 230V | 174V±8V |
| 400V | 320V±10V |
| 690V | 550V±15V |
| Phase Rotation Test | |
| Voltage Range | 100V～690V |
| Frequency | 50Hz～60Hz |
| Single Lead (L2) Measurement | |
| Voltage Range | 100V～690V |
| Frequency | 50Hz～400Hz |
| Continuity Test | |
| Resistance Range | 0～100KΩ (Buzzer and LED indication) |
| RCD Test | |
| Voltage | 230V |
| Frequency | 50Hz～400Hz |
| Polarity Measurement | Positive and Negative |
| Self-Test | Full LED or LCD display |
| Battery-less Detection | 50VAC/120VDC～690VDC/AC |
| Special Features | |
| IP Rating | IP65 |
| Auto Range | Full range |
| Over-voltage Indication | 713V～788V |
| Auto Standby | Standby current <10uA |
| Silent Mode | Full range |
| Illumination Function | Full range |
| Low Battery Display | 2.3V～2.5V |
| LCD Display (Voltage + Frequency) | 6V～690V (40Hz～400Hz) ±(1.5%+5) |
| General Characteristics | |
| Power Supply | 2 x 1.5V AAA batteries (R03) |
| LCD Size | 31mm × 20mm |
| Color | Red + Gray |
| Weight | 280g |
| Dimensions | 272mm × 85mm × 31mm |
| Standard Accessories | Batteries |
1. General Shipping Information
- We provide reliable shipping services with a tracking number for each order.
- Shipping addresses must be entered in English and should not contain special symbols, so that the courier system can recognize your location correctly.
- Please make sure your shipping address is accurate before placing your order. We ship strictly according to the address provided at checkout.
- In-stock orders are usually dispatched within 1 business day after order confirmation.
- Estimated delivery times refer to the period after dispatch and do not include order processing time, weekends, public holidays, customs inspection, or force majeure delays.
- If you need to cancel or modify your order, please contact us before the order is marked as “Shipped”. Once shipped, the order cannot be canceled or changed.
🚀 Need Faster Shipping?
If you require expedited shipping, please contact our customer support team at info@openelab.io for a customized quote based on your destination.
2. Shipping Rates & Options
Shipping rates are calculated based on order value, destination, and available shipping methods. The final available options will be displayed at checkout.
2.1 Germany Domestic Shipping
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| Deutsche Post | €0.00 - €50.00 | €4.95 | 2-4 Business Days |
| Deutsche Post | Over €50.00 | Free | 2-4 Business Days |
|
DHL Paket (Faster Delivery) |
€0.00 - €50.00 | €6.95 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
€50.00 - €100.00 | €2.00 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
Over €100.00 | Free | 1-3 Business Days |
2.2 Selected EU Countries / Regions
Available EU shipping destinations are shown at checkout based on your shipping address. For orders shipped to selected EU countries or regions outside Germany, we use FedEx Regional Economy.
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| FedEx Regional Economy | €0.00 - €100.00 | €7.95 | 3-5 Business Days |
| FedEx Regional Economy | Over €100.00 | Free | 3-5 Business Days |
EU orders may be fulfilled from our Munich warehouse or, when applicable, from our Shenzhen warehouse depending on inventory availability. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.
2.3 United States
| Region | Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|---|
|
Continental U.S. (50 States) |
USPS Ground Advantage | €0.00 - €45.00 | €4.95 | 3-7 Business Days |
| USPS Ground Advantage | Over €45.00 | Free | 3-7 Business Days | |
| USPS Priority Mail | €0.00 - €45.00 | €16.95 | 1-4 Business Days | |
| USPS Priority Mail | Over €45.00 | €14.95 | 1-4 Business Days | |
|
Non-Continental U.S. (AK, HI, PR, etc.) |
USPS Ground Advantage | €0.00 - €60.00 | €6.95 | 5-9 Business Days |
| USPS Ground Advantage | Over €60.00 | Free | 5-9 Business Days |
Non-Continental U.S. regions include Alaska, American Samoa, Guam, Hawaii, the Marshall Islands, the Northern Mariana Islands, Palau, Puerto Rico, the U.S. Virgin Islands, and U.S. Armed Forces addresses.
2.4 International Destinations Outside the EU
For selected international destinations outside the EU, including Switzerland, the United Kingdom, and Norway, shipping rates are as follows:
| Order Amount | Shipping Cost |
|---|---|
| €0.00 - €300.00 | €19.95 |
| Over €300.00 | Free |
For non-EU destinations, import duties, taxes, and customs fees may be charged by the destination country and are the responsibility of the recipient.
3. Warehouses & Fulfillment
Our products may be stored in our Munich, Arlington, and Shenzhen warehouses. The actual shipping warehouse depends on product availability and destination.
3.1 Munich Warehouse
For products stored in our Munich warehouse, we use Deutsche Post or DHL Paket for domestic deliveries within Germany. For selected EU destinations outside Germany, we use FedEx Regional Economy.
3.2 Arlington Warehouse
For products stored in our Arlington warehouse, we use USPS or UPS for deliveries within the United States.
3.3 Shenzhen Warehouse
For pre-order items or products fulfilled directly from our Shenzhen warehouse, we arrange reliable international shipping based on destination and inventory status. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.
4. Inventory, Pre-orders & Split Shipments
- Inventory Status: Please check the product page for real-time stock information. If an item is out of stock in our local warehouses, it may be marked as “Pre-order”.
- Pre-order Fulfillment: Pre-order items may be shipped directly from Shenzhen or restocked to a local warehouse first before final delivery.
- Split Shipments: If your order contains both in-stock and pre-order items, we may ship them separately. No additional shipping fee will be charged for split shipments caused by our fulfillment arrangement.
5. Customs, Taxes & Delivery Issues
5.1 Customs and Taxes
For EU Member States:
Whether shipped from Germany or China, OpenELAB covers applicable import duties and taxes under DDP service where required. Customers in EU member states should not be charged additional import duties or VAT upon delivery.
For destinations outside the European Union, such as Switzerland, Norway, and the United Kingdom, import duties, taxes, and customs fees may be charged by local authorities upon delivery. These fees are the responsibility of the recipient.
5.2 Damaged, Delayed, or Lost Parcels
Please inspect your parcel upon delivery where possible. If you notice visible damage, please report it to the courier and contact us as soon as possible. This does not affect your statutory consumer rights.
If your parcel is delayed, lost, returned to sender, or the tracking information has not updated for an unusual period of time, please contact us at info@openelab.io. We will assist you in checking the shipment status with the courier.
5.3 Incorrect Address or Failed Delivery
If a parcel cannot be delivered due to an incorrect or incomplete address provided by the customer, refusal of delivery, or failure to collect the parcel, additional shipping or return costs may apply.
6. VAT
For orders within the EU, VAT is collected at checkout according to the applicable destination rules. No additional VAT should be collected upon delivery for EU member state orders covered under our DDP shipping arrangement.
