A. Product Features 1. Uses imported precision electronic components combined with advanced long-distance technology, providing an effective wireless range of up to approximately 300 meters in open areas. 2. Equipped with a stable audio chip and preloaded with 52 high-quality ringtones, delivering clear and loud chime music output. 3. Features a modern European and American design with a simple, stylish, and elegant appearance. 4. Digital dual-panel circuit design ensures stable operation and reliable performance. 5. Offers four-level adjustable volume to suit various environments and sound level preferences. 6. The transmitter remote control is designed for durability; pressing the button multiple times daily supports long operational life. 7. Includes mounting tape and a set of screws in the package for easy installation without requiring additional accessories. 8. Suitable for use in homes, apartments, villas, hotels, offices, nursing homes, and hospitals. B. Configuration Methods - **Pairing**: Press and hold the volume button on the receiver for 3 seconds until the indicator light turns on. Once the light remains steady, press any button on the transmitter to complete pairing. - **Unpairing**: While plugging in the power, press and hold the volume button on the receiver. After approximately 8 seconds, when the indicator light remains steady, release the button to erase all stored pairing data. C. Specification Parameters - **Condition**: New - **Material**: ABS - **Color**: Black - **Plug Type**: US standard plug, compatible with 100240V AC - **Available Options**: 1 receiver + 1 transmitter; 1 receiver + 2 transmitters D. Receiver Specifications - **Power Supply**: AC 100240V - **Power Consumption**: 0.5W - **Operating Frequency**: 433MHz - **Remote Control Range**: Up to 300 meters (in open environment) - **Sound Output**: Up to approximately 110 decibels with four-level volume adjustment - **Number of Tones**: 52 - **Dimensions**: Approximately 82 x 82 x 43.6 mm / 3.2 x 3.2 x 1.7 inches E. Transmitter Specifications - **Battery**: 1 x 23A alkaline battery (included) - **Dimensions**: Approximately 74 x 38.5 x 15.7 mm / 2.9 x 1.5 x 0.6 inches F. Package Weight Approximately 135 grams (4.8 ounces) or 160 grams (5.6 ounces), depending on configuration G. Package Contents - 1 receiver - 1 or 2 transmitters (depending on option selected) - 1 roll of mounting tape - 1 pack of mounting screws