Azbil Model FL2R/FL2S -DC 2-Wire Square Proximity Sensors can directly connect to programmable controllers and N.C. units. A wide range of models are available (4, 7, 12, 20 mm, top/side, and N.O./N.C). They have a high-speed response time of 1.5 kHz at 4mm and 1 kHz at 7mm. Different-frequency types are only slightly influenced by mutual interference are available for all models. The proximity sensors have high seal capability (IP67). They have enhanced circuit protection, including surge absorption, load short circuit, and reverse connection countermeasures. The proximity sensors have a 4mm to 20mm sensing distance depending on the size and model. Standard (pre-loaded) model dimensions (mm) – Switch package style: 12 x 12 x 45, 15 x 15x 32, 20 x 20 x 38, 30 x 30 x 52.5, 40 x 40 x 53. Cord length 1 m. Prewired 30 cm switch package style connector cables are available for 12 x 12 x 45, 15 x 15x 32, 20 x 20 x 38, 30 x 30 x 52.5 and 40 x 40 x 53. CE-Marked.