Photoelectric Proximity Sensors - W12 Series A range of SICK photoelectric proximity sensors in robust metal housing suitable for use in a wide range of applications and industrial environments. Die cast metal body Misalignment/dust build up indicator Short circuit and reverse polarity protection Retroreflective types have polarisation filter feature Visible red light source Supply voltage: 10 → 30 Vdc Adjustable sensitivity Model no. Stock No Diffuse-scan or through-beam sensing distance Retro-reflective sensing distance* Retro-reflective sensing distance* Retro-reflective sensing distance* Switching Frequency (Hz) Response Time Switching Mode PL80A PL30A PL20A WL12-3P1151 458-850 n/a 2m - - 1500 330μs Light & Dark WL12-3P2431 458-828 n/a 5m 3m 3m 1500 330μs Light & Dark WTE11-2P1132 458-866 10 - 800mm n/a n/a n/a 1500 330μs Light & Dark WTE11-2P2432 458-856 10 - 800mm n/a n/a n/a 1500 330μs Light & Dark WTB12-3P1111 458-834 20 - 250mm n/a n/a n/a 1500 330μs Light & Dark WTB12-3P2411 458-840 20 - 250mm n/a n/a n/a 1500 330μs Light & Dark WTB12-3P1131 458-838 20 - 250mm n/a n/a n/a 1500 330μs Light & Dark Note For suitable Plug-In leads see stock no. 291-5881 typically W2 To W34 Series Block Style Note For retro-reflective sensors a suitable reflector is required. For PL80A, PL30A & C110 reflectors see stock nos. 265-2776 , 265-2760 & 265-2748 respectively. *Guaranteed operating distances. Maximum sensing distance may be up to double the figure shown.