Experience reliable and efficient signal detection with this high-quality Wireless Signal Alert System, crafted from durable ABS plastic material known for its excellent impact resistance, heat resistance, low chemical resistance, and superior electrical properties. Designed to deliver precise and timely alerts, this system features a sensitive central axle roller that instantly detects signals and activates both audible beeping and bright LED light warnings for enhanced notification. Key Features: · Durable ABS Plastic Construction: Provides robust impact resistance, heat resistance, and chemical stability to ensure long-lasting performance under various conditions. · High-Quality KB-PCB Double-Sided Circuit Board: Enhances circuit reliability and extends the overall service life of the device. · Sensitive Central Axle Roller Sensor: Quickly captures signals with high sensitivity, triggering immediate beeping sounds and visual LED alerts for dependable monitoring. · Bright and Clear Indicator LED Lamp: Ensures notifications are easily seen at all times for improved responsiveness. · Low Standby Power Consumption: Designed for energy efficiency and environmental friendliness, reducing power waste during idle times. Specifications: · Material: ABS Plastic · Main Color: Black · Launcher Size: Approx. 11.5 x 3.8 cm (4.5 x 1.5 inches) · Receiver Size: Approx. 9.6 x 5 cm (3.8 x 2 inches) · Receiver Battery: AAA battery (Not Included) · Launcher Battery: 12V LR23A battery (Not Included) Package Includes: · 4 x Launcher Units · 1 x Receiver Unit · 1 x Manual This Wireless Signal Alert System is perfect for applications requiring prompt and reliable signal detection with combined audible and visual notifications. Its sturdy ABS plastic body and advanced circuitry ensure durability and long-term use. Please note that the product version may vary between new and old models, which will be shipped randomly. Batteries are not included, allowing you to choose the power sources that best fit your needs.