Combo locks, also known as combination locks, are widely used in various types of residential doors and entryways due to their convenience, security, and ease of use. These locks do not require keys and instead rely on a set of predetermined numbers or letters to open the door.

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Traffic signal countdown timers have become increasingly common at intersections worldwide, providing motorists and pedestrians with real-time information about the time remaining until the traffic signal changes. These timers aim to improve safety, reduce driver frustration, and enhance overall traffic flow.

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LoRa (Long Range) parking sensors have emerged as an innovative solution to address the growing challenges of urban parking management.

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