Jaltest (50004011) | Wear Sensor Tester (WST)
Warranty directly via AsTools
Warranty directly via AsTools
We handle warranty cases ourselves, quickly and without involving the manufacturer. Thanks to our own parts inventory and technical expertise, we can usually assist you immediately. Only in exceptional cases do we still send the product to the supplier.
2 years warranty on all products
2 years warranty on all products
All our products come with a 2-year factory warranty. This ensures you long-lasting quality and service.
Easy returns
Easy returns
You can easily request your return through your account. We will send you the return label by email. Return shipping costs are your responsibility.
Professional customer service
Professional customer service
Our experts are ready to help you quickly and professionally, both online and in our physical store. Questions? Feel free to contact us!
\nThe Jaltest WST (reference 50004011) is the Wear Sensor Tester: A compact portable device that allows you to operation and status of brake pad wear sensors checks. Cojali also provides the OE reference K154433N50 van Knorr-Bremse at.\n
\nYou connect the plug at the brake caliper loose, connect the matching Jaltest connector on, selects with the rotary switch the sensor type and reads the voltage in volts on the display. You compare this value with the reference table, and that way you know it wear percentage. This is how you check and adjustwithout dismantling components, allowing you to use the brake pad completely.\n
KEY FEATURES
KEY POINTS
Applications and functionality
Which sensors the WST tests
- Continuous wear sensors: Cojali lists DAF, Iveco, Mercedes-Benz, Scania, MAN and Meritor.
- 2-wire sensors: The versions that only signal at the end of the wear cycle.
How to use it
- Disconnect the plug at the brake calliper: That is where you connect.
- Select the correct connector: The cable set includes connections for Renault, Volvo, Scania, Mercedes-Benz, Knorr-Bremse, DAF, EvoBus, Iveco, Hyundai, MAN and Wabco.
- Set the sensor type: Using the rotary switch on the device.
- Read the voltage and compare: The display shows volts; the reference table translates that to wear.
- Follow the LEDs: Green is good, red is fault, amber means the battery is nearly flat.
Package contents
- 1x Jaltest (50004011) | WST, Wear Sensor Tester
- 1x Cable set with brand-specific connectors
- 1x Carrying case
Technical specifications
| Specification | Description |
|---|---|
| Brand | Jaltest (Cojali) |
| Reference number | 50004011 |
| Official name | Jaltest WST (Wear Sensor Tester) |
| OE reference | K154433N50 Knorr-Bremse |
| Type | Sensor tester, standalone handheld device |
| Sensor types | Continuous wear sensors and 2-wire sensors |
| Display | Digital display in volts, comparable with reference table |
| Brands in cable set | Renault, Volvo, Scania, Mercedes-Benz, Knorr-Bremse, DAF, EvoBus, Iveco, Hyundai, MAN and Wabco |
| Dimensions | 144 x 66 x 40 mm |
| Weight | Approximately 193 grams; approximately 1,270 grams including carrying case |
| Operating temperature | -10 °C to 40 °C |
| Jaltest Link or licence required | No |

To ensure you always have access to the latest software updates and releases for your Jaltest device, it's important that you register the correct distributor.
Only the authorized distributor can perform new software installations and updates. When you designate us as your distributor, we can handle this for you and guarantee that your device stays current and runs smoothly.
How does it work?
-
Download and complete the change form
You can find the form as a PDF file here. -
Send us the completed form
You can easily do this by email to support@astools.eu. -
We'll take care of the rest
With the form, we can notify Jaltest of the change and officially register you as our customer.




