1. Introduction
Thank you for choosing the Eberle INSTAT 868-r1 Wireless Thermostat. This device is designed to provide precise and convenient temperature control for your heating or cooling system. Its wireless functionality offers flexible placement, while its intuitive controls ensure ease of use. Please read this manual carefully before installation and operation to ensure proper use and to maximize the performance and lifespan of your thermostat.
2. Safety Information
- Electrical Safety: Installation should only be performed by a qualified electrician or competent person, in accordance with local wiring regulations. Ensure power is disconnected before installation or maintenance.
- Battery Safety: Use only the specified battery type. Do not mix old and new batteries, or different types of batteries. Dispose of used batteries responsibly according to local regulations.
- Placement: Avoid placing the thermostat near heat sources (e.g., direct sunlight, lamps, appliances) or drafts, as this can affect temperature readings.
- Cleaning: Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Children: Keep the device out of reach of children.
3. Package Contents
Please check the package contents upon unpacking. If any items are missing or damaged, contact your retailer.
- Eberle INSTAT 868-r1 Wireless Thermostat (1 pc)
- Installation Material (screws, wall plugs)
- User Manual
4. Product Overview
The INSTAT 868-r1 is a battery-powered wireless room thermostat designed for easy temperature regulation. It features a rotary knob for setting the desired temperature and an adaptive address configuration for reliable communication with a compatible receiver (receiver sold separately).

Figure 1: Front view of the Eberle INSTAT 868-r1 Wireless Thermostat, featuring the main rotary dial for temperature adjustment and a digital display.
Key Features:
- Rotary Knob: For easy temperature setting.
- Automatic Operation: Maintains desired temperature automatically.
- Adaptive Address Configuration: Ensures reliable wireless communication.
- Valve Protection Function: Helps prevent valve seizure in heating systems.
- Frost Protection Function: Prevents temperatures from dropping below a critical level.
- Wireless Transmitter: Communicates with a compatible receiver (not included).
5. Setup and Installation
5.1 Choosing a Location
Select a central location in the room where the temperature is representative of the entire area. Avoid placing the thermostat:
- Near windows or doors where drafts may occur.
- In direct sunlight or near heat-emitting appliances (e.g., TV, refrigerator).
- On an outside wall.
- Behind curtains or furniture.
5.2 Mounting the Thermostat
- Carefully open the thermostat casing.
- Mark the desired mounting position on the wall. Ensure it is at an appropriate height (typically 1.5 meters from the floor).
- Drill holes and insert the provided wall plugs.
- Secure the backplate of the thermostat to the wall using the provided screws.
- Insert the batteries (see section 5.3).
- Attach the front part of the thermostat to the backplate, ensuring it clicks securely into place.
5.3 Battery Installation
- Open the battery compartment cover, usually located on the back or side of the thermostat.
- Insert the required batteries (e.g., AA or AAA, check the device for specific type) according to the polarity markings (+/-).
- Close the battery compartment cover securely.
5.4 Pairing with Receiver (if applicable)
The INSTAT 868-r1 uses an adaptive address configuration. Refer to the manual of your specific Eberle 868 MHz receiver for detailed pairing instructions. Generally, this involves putting the receiver into pairing mode and then activating the thermostat's pairing function (often by pressing a button or turning the dial to a specific setting).
6. Operating Instructions
6.1 Setting the Temperature
To set your desired room temperature, simply rotate the main dial on the front of the thermostat. The current set temperature will be displayed. Turn the dial clockwise to increase the temperature and counter-clockwise to decrease it. The thermostat will then automatically work to maintain this set temperature.
6.2 Frost Protection Function
The thermostat includes a frost protection function. If the room temperature drops below approximately 5°C (adjustable in some models), the heating system will be activated automatically to prevent freezing, even if the thermostat is set to a lower temperature or off. This function is crucial for protecting pipes and property during cold periods.
6.3 Valve Protection Function
To prevent heating valves from seizing up due to prolonged inactivity, the thermostat may periodically activate the heating for a short duration, even when there is no heating demand. This is a normal function designed to extend the life of your heating system components.
6.4 Automatic Operation
Once the desired temperature is set, the thermostat operates automatically. It continuously monitors the room temperature and sends signals to the receiver to turn the heating/cooling system on or off as needed to maintain the set point within its hysteresis range (e.g., 0.5°C).
7. Maintenance
7.1 Cleaning
Wipe the thermostat's exterior with a soft, dry cloth. Do not use liquid cleaners, sprays, or abrasive materials, as these can damage the casing or internal components.
7.2 Battery Replacement
When the battery indicator appears on the display (if applicable) or the thermostat stops responding, it's time to replace the batteries. Follow the steps in section 5.3 for battery installation. Always replace all batteries at the same time with new ones of the same type.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Thermostat not responding / Display blank | Dead batteries | Replace batteries (see section 7.2). |
| Heating/Cooling not turning on/off |
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| Inaccurate temperature readings |
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9. Specifications
| Feature | Detail |
|---|---|
| Brand | Eberle |
| Model Name | INSTAT 868-r1 |
| Product Dimensions (L x W x H) | 8 cm x 8 cm x 3 cm |
| Controller Type | Push Button (Rotary Knob) |
| Special Features | Cooling, Remote Control (Wireless) |
| Color | White |
| Specific Uses | Professional and Personal Use |
| Temperature Control Type | Manual |
| Connectivity Technology | RF (Radio Frequency) |
| Included Components | Installation Material |
| Power Source | Battery-powered |
| Frequency | 868 MHz |
| Temperature Range | 5 to 30 °C |
| Hysteresis | 0.5 °C |
| Weight | 100 g |
10. Warranty and Support
Eberle products are manufactured to high-quality standards. For information regarding warranty terms and conditions, please refer to the warranty card included with your product or visit the official Eberle website. For technical support, troubleshooting assistance beyond this manual, or spare parts, please contact your retailer or an authorized Eberle service center.
Online Resources: For the latest information, FAQs, and additional support, please visit the official Eberle website.





