Product Overview
The BYHUBYENG FLYDOG Wireless Call Button Transmitter S1 is a battery-operated desktop call button designed for various service environments such as restaurants, cafes, izakayas, hospitals, and care facilities. This unit functions as a transmitter and requires a compatible FLYDOG receiver (models 200E, 200D, 300S-Q, 300L, 400D-JPU) for operation.
Package Contents:
- Transmitter Unit (S1) x 1 (Battery built-in, fixed double-sided tape included)
Important Note: This transmitter unit cannot be used independently. It must be paired with a compatible FLYDOG receiver.
Setup and Pairing
To set up your FLYDOG Wireless Call Button Transmitter S1, follow these steps:
- Ensure your compatible FLYDOG receiver is powered on and in pairing mode. Refer to your receiver's manual for specific instructions on entering pairing mode (often referred to as F1 function setup).
- On the receiver, initiate the function to register a new transmitter.
- Press the call button on the S1 transmitter. The receiver should detect the signal and allow you to save the transmitter's number.
- Confirm the pairing on the receiver. The transmitter is now ready for use.

Image: Detailed view of the FLYDOG S1 transmitter, showing its front, side, and rear views, along with specifications and battery replacement instructions.
Operation
Once paired, operating the FLYDOG Wireless Call Button Transmitter S1 is straightforward:
- To send a call signal, simply press the "CALL" button located on the front of the transmitter.
- A red LED indicator on the transmitter will illuminate briefly to confirm that a signal has been sent.
- The paired receiver will then display the transmitter's number and/or emit an alert, depending on the receiver model's settings.

Image: A hand pressing the "CALL" button on the FLYDOG S1 transmitter, with the red indicator light visible.

Image: A waiter in a restaurant setting, wearing a wrist-type receiver, demonstrating the use of the wireless call system.
Maintenance
Battery Replacement
The S1 transmitter uses CR1632 batteries. To replace the battery:
- Locate the battery compartment on the rear of the transmitter.
- Loosen the screws securing the battery cover.
- Remove the old battery.
- Insert a new CR1632 battery, ensuring correct polarity.
- Replace the cover and tighten the screws.
Water Resistance: The surface design offers slight splash resistance, but the unit is not fully waterproof. Do not immerse it in water.
Troubleshooting
If you encounter issues with your FLYDOG Wireless Call Button Transmitter S1, consider the following:
- No Signal Transmission:
- Check the battery: Ensure the battery is correctly installed and has sufficient charge. Replace if necessary.
- Check pairing: Verify that the transmitter is correctly paired with the receiver. Re-pair if needed according to the "Setup and Pairing" instructions.
- Obstacles: Large metal objects or thick walls between the transmitter and receiver can interfere with the signal. Try repositioning the units.
- Distance: Ensure the transmitter is within the operational range of the receiver. Signal range can be extended by adding a FLYDOG repeater.
- Interference:
- The system features strong anti-interference capabilities. However, if multiple call bells are used simultaneously in close proximity, ensure proper channel separation if your receiver supports it.

Image: A diagram illustrating how a FLYDOG repeater can extend the signal range between the transmitter and receiver, showing distances of 20-60m and up to 500m with a repeater.
Specifications
| Feature | Detail |
|---|---|
| Model Number | CS-S1 |
| Product Name | Transmitter / Call Button |
| Color | Brown (Transmitter Unit-S1) |
| Battery Type | CR1632 x 2 (Lithium, included) |
| Key Function | 1: Call |
| Size | φ60mm (Diameter) x 9mm (Height) |
| Weight | 22g |
| Mounting Type | Tabletop Mount |
| Included Accessories | Double-sided adhesive (for product back attachment) |
| UPC | 755419629419 |

Image: A comprehensive chart displaying various FLYDOG transmitter and receiver models, indicating compatibility and system configurations.

