Microphones; Acceleration sensors; Alarm installations and alarms; Alarm sensors; Anti-intrusion alarms; Automatic altitude indicators; Automatic valves; Infant movement alarms; Infrared detectors; Level switches and level indicators for monitoring and controlling liquids in tanks and vessels; Pressure sensors; Ultrasonic sensors; USB card readers; Wearable activity trackers; Wireless controllers to monitor and control the functioning of other electronic devices