Introduction
The Retekess TD158 Wireless Calling System is designed to streamline guest queuing and service calls in various environments such as restaurants, cafes, bars, hospitals, clinics, and church nurseries. This system features a keypad transmitter and multiple pagers, providing efficient communication between staff and waiting customers or patients.

Image: Retekess TD158 Wireless Calling System components.
Key Features
- Expandable System: Supports up to 998 pagers, allowing for scalability as your business grows.
- Durable Design: Features a touch-screen life-grade waterproof launch keyboard.
- Multiple Reminder Modes: Pagers offer four distinct reminder modes: Flash, Flash + Vibration, Flash + Beep, and Flash + Beep + Vibration.
- Long Transmission Distance: Effective calling distance of over 300 meters in open areas, and up to 100 meters indoors.
- Low Battery Indicator: Pagers display "LO" when battery is low, prompting for recharge.
- Long Standby Time: Built-in 3.7V 300mAh rechargeable lithium battery provides approximately 10-12 hours of standby time and 7-8 hours of continuous use.
- Multi-Window Calling: Multiple keyboards can call the same pager, enabling flexible service management.
- Adjustable Reminder Duration: Reminder duration can be set from 0 to 200 seconds.
- One-Key Shutdown: Conveniently turn off all pagers on the charging base by entering "0" and pressing the "bell" button on the keyboard.

Image: Illustration of the four pager reminder modes.

Image: Overview of key system features.
Setup
- Unpacking: Carefully unpack all components. The package typically includes 10 receivers (pagers), 1 power adapter, and 1 charger base.
- Charging Pagers:
- Place the pagers onto the charging base.
- Connect the power adapter to the charging base and plug it into a power outlet.
- The green light on the pagers will flash during charging and remain steadily lit when fully charged.
- Ensure pagers are fully charged before first use (charging time is approximately 2-3 hours).

Image: Pagers on charging base, illustrating charging status and battery life.

Image: Typical package contents.
- Keypad Placement: Place the keypad transmitter in a convenient location for staff to operate. The keypad is designed to be space-saving and waterproof.
Operating Instructions
- Calling a Pager:
- On the keypad transmitter, enter the number of the pager you wish to call.
- Press the "bell" button (or equivalent call button) on the keypad.
- The corresponding pager will activate its set reminder mode (flash, vibrate, beep, or a combination).

Image: Operating the touch-screen keypad transmitter.
- Pager Reminder Modes: The pagers can be configured for different alert types. The available modes are:
- Flash only
- Flash + Vibration
- Flash + Beep
- Flash + Beep + Vibration
- One-Key Shutdown: To turn off all pagers simultaneously while they are on the charging base:
- Ensure all pagers are placed on the charging base.
- On the keypad, enter "0".
- Press the "bell" button. All pagers on the base will power off.
- Adjusting Reminder Duration: The duration of the pager reminder can be set between 0 and 200 seconds. Refer to the full user manual for detailed instructions on accessing and changing this setting.
Video: Demonstration of the Retekess TD158 Wireless Calling System in use.
Maintenance
- Battery Care: The pagers are equipped with a 3.7V 300mAh rechargeable lithium battery. For optimal performance and longevity, ensure pagers are regularly charged.
- Charging Indicator: The green light on the pager indicates charging status: flashing when charging, solid when fully charged.
- Cleaning: The keypad is life-grade waterproof. Use a soft, damp cloth to clean the keypad and pagers. Avoid harsh chemicals or abrasive materials.
- Storage: When not in use for extended periods, store the system in a cool, dry place. Ensure pagers are partially charged before storage to prevent deep discharge.
Troubleshooting
- Pager Not Responding:
- Check if the pager is within the transmission range (up to 300m open area, 100m indoors).
- Ensure the pager is charged. If "LO" is displayed, recharge the pager.
- Verify the correct pager number was entered on the keypad.
- "LO" Display on Pager: This indicates a low battery. Place the pager on the charging base immediately.

Image: Pager showing low battery indicator "LO".
- Short Transmission Range:
- Obstacles like thick walls or metal structures can reduce range. Try to minimize obstructions between the keypad and pagers.
- Ensure the keypad is placed in a central location.
Specifications
| Feature | Detail |
|---|---|
| Model Number | TD158 |
| Brand Name | Retekess |
| Origin | Mainland China |
| Certification | CE, FCC |
| Battery Included | Yes |
| High-concerned chemical | None |
| Pager Dimension | Φ80.5*15mm (approx. 3.17in diameter * 0.59in height) |
| Receiving Sensitivity | -103dB |
| Standby Time (Pager) | ≈20 hours (up to 12 hours mentioned in image) |
| Continuous Use Time (Pager) | 7-8 hours |
| Charging Time (Pager) | 2-3 hours |
| Battery (Pager) | Built-in 3.7V 300mAh rechargeable lithium battery |
| RX Frequency | 433MHz |
| Reminder Method | Buzzing, LED Flashing, Vibration |
| Distance of Transmission | About 200 meters in a wide-open field (up to 300m open area, 100m indoors mentioned in image) |
| Modulation | AM |
| Package Weight | 1.03 kg |
| Package Dimensions | 25cm x 14cm x 11cm |

Image: Technical specifications of the pager receiver.

Image: Physical dimensions of the TD158 pager.
User Tips
- Scalability: The system can be expanded with additional pagers and charging bases as needed, supporting up to 998 pagers. This is ideal for growing businesses.
- Flexible Calling: Utilize multiple keypad transmitters to call the same pagers, which is beneficial for establishments with multiple service points or staff members.
- Optimal Placement: For best performance, position the keypad transmitter in a central location, minimizing physical obstructions like thick walls or large metal objects that could interfere with the signal.
- Customization: Consider customizing pagers with your business logo for a professional touch.

Image: Example of pagers with customized logos.
Warranty and Support
For specific warranty details, technical support, or service inquiries, please contact Retekess Official Store directly. Keep your purchase records for any warranty claims.
Applications
The Retekess TD158 Wireless Calling System is versatile and suitable for a wide range of applications, including:
- Restaurants
- Cafes and Coffee Shops
- Bars
- Hospitals and Clinics
- Church Nurseries
- Food Courts
- Any establishment requiring efficient guest queuing or service calls.

Image: Various environments where the TD158 system can be used.





