10 SW420 vibration motion sensor modules are included. This set is suitable for security applications such as theft alarms and smart car alarms. Key benefits Long trigger duration for reliable activation: extended vibration trigger duration improves alarm reliability and responsiveness in alarm situations. Clean, robust output: comparator output provides a clean signal with drive capability greater than 15 mA, enabling easy interfacing with relay modules. Broad compatibility: drive capability supports connection to numerous relay modules for efficient operation. Compact and easy to integrate: footprint of 2.0 cm x 1.4 cm keeps your designs spaceefficient while enabling straightforward integration. Applications and use scenarios Home or retail theft alarms: deploy on doors, windows, or cabinets to detect vibration and trigger an alert. Vehicle security systems: integrate into cars or motorcycles to enhance antitheft and tamper detection through vibration sensing. Small equipment and asset protection: monitor vibration on tools, vending machines, or luggage to detect tampering or unexpected movement.