MS-DP1-FM is a flat attachment accessory designed for Panasonic DP-10-M(-P) and DP-10-ZL3-M-P(-C) pressure sensors, enabling flexible pressure port orientation and flat mounting on surfaces such as walls. The attachment features an M5 female thread connection to the sensor and allows the pressure port and cable to be directed downward, leftward, or rightward, eliminating the need for bulky elbow joints. Constructed from polybutylene terephthalate (PBT) with glass fiber reinforcement for the enclosure and stainless steel (SUS303) for the pressure port, the MS-DP1-FM weighs approximately 15 grams and includes two M3 (8 mm) and two M4 (20 mm) mounting screws. The coupling connection to the pressure port should be tightened to a maximum torque of 1 N·m to prevent damage. This accessory is ideal for space-constrained installations where compact, neat mounting is required while maintaining sensor functionality and measurement accuracy.