Based on this product's specifications, here are some alternatives and similar models
Water Detector Olympia 6105 Sensmitter Wireless
Summary description:
The Olympia 6105 Sensmitter Wireless water detector is powered by alkaline batteries. With dimensions of 27 mm width, 18 mm depth, and 55 mm height, it is compact and easy to install. The package dimensions are 90 mm width, 30 mm depth, and 150 mm height. This device provides reliable detection of water leaks, helping to prevent damage and maintain safety in your home or office.