Feature: 1. INTELLIGENT POWER TRANSMISSION: The independently developed chip can automatically sense environmental changes and adjust the radio's transmission power according to environmental conditions, greatly extending the service life of the transmission tube while also reducing power. 2. ABS MATERIAL: Made of ABS material, this alarm operates with high density, high temperature resistance, strong toughness, and UV resistance. 3. ACCURATE IDENTIFICATION: After installation, when someone or other intruder comes into contact with two or more adjacent beams, the alarm output triggers the infrared barrier detector. Intelligent detection technology can identify small animals passing without alarm. 4. ANTI INTERFERENCE: This barrier alarm has intrusion alarm functions such as anti tampering and anti infrared interference. 5. APPLICABLE SCENARIO: Suitable for installing wall in villas, factories, residential areas, and schools to prevent strangers from invading the alarm system. Specification: Item Type: Solar Infrared Detection Alarm Material: ABS Battery: 18650 lithium battery x 2 Battery Capacity: 2Ah x 2 (shipped with matching battery) Detection Distance: Approx. 200m / 656.2ft Detection Speed: 100ms Wireless Frequency: 433MHZ ASK OOK Protection Level: IP65 Alignment Angle: Horizontal 180 ° (± 90 °), vertical 90 ° ± 10 °. Package List: 1 x Emitter 1 x Receiver 4 x Clamp 2 x 18650 Battery 1 x Manual