• Anti-abandonment device for car seats with keychain, acoustic and visual alarms, and automatic activation without the need for a cell phone. • Detects the presence of the child in the car and activates automatically if the parent moves away from the vehicle with the child on board. • Emits two simultaneous alarms: one on the parent's keychain and another visible light in the car, both day and night. • The alarms are deactivated only when the parent with the keychain returns to the car. • Low battery warning for the keychain and child detector. Batteries are not included and are replaceable or rechargeable via a 5V USB charger. • Approved and safe, in accordance with Law 122/2019. Easy installation in any car seat. • Product dimensions: 14 cm wide, 6.6 cm high, and 21 cm long.