With the Angelcare sensor mat, you can expand your Angelcare baby monitor. This provides you with reliable movement monitoring. The sensor mat is compatible with the AC310-D and AC510-D models. The mat connects to the baby monitor via a cable and can be placed up to 1 meter away from the transmitter. Every slightest movement is detected and transmitted by the sensor mat. The movement sensor mat is suitable for all standard crib mattresses. Excluded are memory foam, hollow fiber, and air core mattresses, as well as water beds and co-sleepers. Compatible with AC310-D and AC510-D. Wired connection.