McMaster-Carr logo
    Filter by
    System of Measurement
    Output Digital Signal
    Safety Light Curtain Protection
    Electrical Connection
    Cable Color
    Electrical Connection Type
    Transmitter Plug Connection Number of Poles
    Enclosure Rating
    Industrial Info Compare
    Light Beam Type
    Housing Material
    Industrial Info Compare
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Snippet
    Sensor Type
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Maximum Temperature
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    55 Products

    Safety Light Curtains

    Image of Product. Transmitter and Receiver. Front orientation. Safety Light Curtains. Safety Light Curtains .

    Transmitter

    and Receiver

    Image of Specification. 5-Pole M12 Plug. Front orientation. 5. Safety Light Curtains .

    5-Pole

    M12

    Plug

    Image of Specification. 4-Pole M12 Plug. Front orientation. 4. Safety Light Curtains .

    4-Pole

    M12

    Plug

    Image of Specification. 8-Pole M12 Plug. Front orientation. 8. Safety Light Curtains .

    8-Pole

    M12

    Plug

    Immediately cut power to machinery by breaking the light beam between two barriers. Light beams can travel up to 32 or 65 feet between the transmitter and receiver. They’re rated IP67, so they can be used in wet areas. For a complete switching system, combine a transmitter and receiver, safety relay, and connectors (all sold separately).
    These curtains can be configured for complex setups. To selectively allow material to pass through the sensing field, you can program the system to allow one or more beams to be broken without shutting off your machine. To create a perimeter guard that bends around corners, add mirrors to reflect light beams at an angle.
    Swivel brackets can be adjusted during and after installation for easy alignment.
    For the Manufacturer User Manual, click on a part number and select Product Detail.
    Note: These curtains cannot be used with a full-revolution clutch press or machine. Use only with machinery that can consistently and immediately stop anywhere in its cycle.
    Finger-Safe Transmitters and Receivers (IP67)
    Image of Attribute. Front orientation. Contains Annotated. Safety Light Curtains. Safety Light Curtains , Finger Safe.
    Finger-safe curtains trigger from objects the size of a finger passing through.
    Bluetooth Connection—Those with Bluetooth let you monitor switching status, beam alignment, and other data on your phone.
    Light Curtains
    Replacement
    Fixed Brackets
    Swivel Brackets
    Plug Type
    Light Beam
    Ht.
    Light Beam Switch
    Operation
    Sensing Distance,
    ft.
    Input Voltage,
    V DC
    Current
    Output, mA
    Max. Load
    Current, mA
    Output Digital
    Signal
    Transmitter
    Receiver
    Ht.
    Wd.
    Dp.
    Housing
    Material
    Color
    Each
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    0.55" Minimum Object Size Detected
     
    Four Fixed Mounting Brackets
    6.3"On When Object Absent1 to 3224115300PNP/NPN5-Pole M128-Pole M128.2"1.4"1.4"Painted AluminumYellow7774K3900000000027774K6400000027774K620000000
    9.4"On When Object Absent1 to 3224120300PNP/NPN5-Pole M128-Pole M1211.3"1.4"1.4"Painted AluminumYellow7774K410000000027774K640000027774K62000000
    12.6"On When Object Absent1 to 3224130300PNP/NPN5-Pole M128-Pole M1214.5"1.4"1.4"Painted AluminumYellow7774K430000000027774K640000027774K62000000
    15.7"On When Object Absent1 to 3224140300PNP/NPN5-Pole M128-Pole M1217.6"1.4"1.4"Painted AluminumYellow7774K440000000027774K640000027774K62000000
    18.9"On When Object Absent1 to 3224130300PNP/NPN5-Pole M128-Pole M1220.8"1.4"1.4"Painted AluminumYellow7774K420000000027774K640000027774K62000000
    22"On When Object Absent1 to 3224135300PNP/NPN5-Pole M128-Pole M1223.9"1.4"1.4"Painted AluminumYellow7774K450000000027774K640000027774K62000000
    28.3"On When Object Absent1 to 3224150300PNP/NPN5-Pole M128-Pole M1230.2"1.4"1.4"Painted AluminumYellow7774K460000000027774K640000027774K62000000
    34.6"On When Object Absent1 to 3224160300PNP/NPN5-Pole M128-Pole M1236.5"1.4"1.4"Painted AluminumYellow7774K470000000027774K640000027774K62000000
    47.2"On When Object Absent1 to 3224190300PNP/NPN5-Pole M128-Pole M1249.1"1.4"1.4"Painted AluminumYellow7774K480000000027774K640000027774K62000000
     
    0.55" Minimum Object Size Detected—Bluetooth
     
    Four Fixed Mounting Brackets
    9.8"On When Object Absent10 to 3224900PNP4-Pole M128-Pole M1214.3"1.1"1.3"Painted AluminumYellow7774K12200000000———0———0
    13"On When Object Absent10 to 3224900PNP4-Pole M128-Pole M1217.4"1.1"1.3"Painted AluminumYellow7774K12300000000———0———0
    22.4"On When Object Absent10 to 3224900PNP4-Pole M128-Pole M1226.9"1.1"1.3"Painted AluminumYellow7774K12400000000———0———0
    28.7"On When Object Absent10 to 3224900PNP4-Pole M128-Pole M1233.2"1.1"1.3"Painted AluminumYellow7774K12500000000———0———0
     
    Accessories for Light Curtains
    Hand-Safe Transmitters and Receivers (IP67)
    Image of Attribute. Front orientation. Contains Annotated. Safety Light Curtains. Safety Light Curtains , Hand Safe.
    Hand-safe curtains trigger from objects the size of a hand passing through—but not slimmer objects such as a finger. For curtains with a light beam height up to 9.4", you’ll need four fixed or two swivel brackets. For curtains with a light beam height of 12.6" and greater, you’ll need four fixed or four swivel brackets.
    Light Curtains
    Replacement
    Fixed Brackets
    Swivel Brackets
    Plug Type
    Light Beam
    Ht.
    Light Beam Switch
    Operation
    Sensing Distance,
    ft.
    Input Voltage,
    V DC
    Current
    Output, mA
    Output Digital
    Signal
    Transmitter
    Receiver
    Ht.
    Wd.
    Dp.
    Housing
    Material
    Color
    Each
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    0.98" Minimum Object Size Detected
    6.3"On When Object Absent1 to 6524155PNP/NPN5-Pole M128-Pole M126.3"1.3"1.5"Painted AluminumYellow7774K111000000028690N1500000027774K1210000000
    9.4"On When Object Absent1 to 6524160PNP/NPN5-Pole M128-Pole M129.4"1.3"1.5"Painted AluminumYellow7774K11200000028690N150000027774K121000000
    12.6"On When Object Absent1 to 6524160PNP/NPN5-Pole M128-Pole M1212.6"1.3"1.5"Painted AluminumYellow7774K11300000028690N150000027774K121000000
    15.7"On When Object Absent1 to 6524160PNP/NPN5-Pole M128-Pole M1215.7"1.3"1.5"Painted AluminumYellow7774K11400000028690N150000027774K121000000
    18.9"On When Object Absent1 to 6524165PNP/NPN5-Pole M128-Pole M1218.9"1.3"1.5"Painted AluminumYellow7774K1150000000028690N150000027774K121000000
    22"On When Object Absent1 to 6524165PNP/NPN5-Pole M128-Pole M1222"1.3"1.5"Painted AluminumYellow7774K1160000000028690N150000027774K121000000
    28.3"On When Object Absent1 to 6524175PNP/NPN5-Pole M128-Pole M1228.3"1.3"1.5"Painted AluminumYellow7774K1170000000028690N150000027774K121000000
    34.6"On When Object Absent1 to 6524180PNP/NPN5-Pole M128-Pole M1234.6"1.3"1.5"Painted AluminumYellow7774K1180000000028690N150000027774K121000000
    47.2"On When Object Absent1 to 6524190PNP/NPN5-Pole M128-Pole M1247.2"1.3"1.5"Painted AluminumYellow7774K1190000000028690N150000027774K121000000
     
    Accessories for Light Curtains

    Harsh Environment Safety Light Curtains

    Image of Product. Transmitter and Receiver. Front orientation. Safety Light Curtains. Harsh Environment Safety Light Curtains .

    Transmitter

    and Receiver

    Image of Specification. 4-Pole M12 Plug. Front orientation. 4. Harsh Environment Safety Light Curtains .

    4-Pole

    M12

    Plug

    Image of Specification. 5-Pole M12 Plug. Front orientation. 5. Harsh Environment Safety Light Curtains .

    5-Pole

    M12

    Plug

    Shut off machinery on your roughest, dirtiest job sites the second someone or something gets too close. Shielded by a polycarbonate housing, these safety light curtains withstand impact better than standard models. Rated IP69, they’re sealed to keep out dust and high-pressure, high-temperature washdowns, so they'll stand up to mud, water, and heat on site. They're often used in construction zones and mining operations. When conditions are too harsh for inspections, use Bluetooth to send diagnostics to your phone. Simply connect to the app to monitor switching status, beam alignment, and other data from afar.
    These curtains trigger when the light beams between the transmitter and receiver are interrupted. To selectively allow material to pass through the sensing field, you can program the system to allow one or more beams to be broken without shutting off your machine. To create a perimeter guard that bends around corners, add mirrors to reflect light beams at an angle.
    For a complete switching system, combine a transmitter and receiver, which are sold together, with a safety relay (sold separately).
    For the Manufacturer User Manual, click on a part number and select Product Detail.
    Note: These curtains cannot be used with a full-revolution clutch press or machine. Use only with machinery that can consistently and immediately stop anywhere in its cycle.
    Finger-Safe Transmitters and Receivers (IP69)
    Image of Attribute. Front orientation. Contains Annotated. Safety Light Curtains. Harsh Environment Safety Light Curtains , Finger Safe.
    Finger-safe curtains trigger from objects the size of a finger passing through.
    Plug Type
    Light Beam
    Ht.
    Light Beam Switch
    Operation
    Sensing Distance,
    ft.
    Input Voltage,
    V DC
    Current
    Output, mA
    Output Digital
    Signal
    Transmitter
    Receiver
    Ht.
    Wd.
    Dp.
    Housing
    Material
    Color
    Includes
    Cable Lg.,
    ft.
    Each
    0.55" Minimum Object Size Detected—Bluetooth
    13"On When Object Absent1 to 2324700PNP4-Pole M125-Pole M1218.1"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N11000000000
    19.3"On When Object Absent1 to 2324700PNP4-Pole M125-Pole M1224.4"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N1300000000
    25.6"On When Object Absent1 to 2324700PNP4-Pole M125-Pole M1230.7"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N1500000000
    28.7"On When Object Absent1 to 2324700PNP4-Pole M125-Pole M1233.9"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N1700000000
    35"On When Object Absent1 to 2324700PNP4-Pole M125-Pole M1240.2"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N1900000000
    38.2"On When Object Absent1 to 2324700PNP4-Pole M125-Pole M1243.3"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N2200000000
    47.6"On When Object Absent1 to 2324700PNP4-Pole M125-Pole M1252.8"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N2400000000
    53.9"On When Object Absent1 to 2324700PNP4-Pole M125-Pole M1259.1"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N2600000000
     
    Safety Relays
    Hand-Safe Transmitters and Receivers (IP69)
    Image of Attribute. Front orientation. Contains Annotated. Safety Light Curtains. Harsh Environment Safety Light Curtains , Hand Safe.
    Hand-safe curtains trigger from objects the size of a hand passing through.
    Plug Type
    Light Beam
    Ht.
    Light Beam Switch
    Operation
    Sensing Distance,
    ft.
    Input Voltage,
    V DC
    Current
    Output, mA
    Output Digital
    Signal
    Transmitter
    Receiver
    Ht.
    Wd.
    Dp.
    Housing
    Material
    Color
    Includes
    Cable Lg.,
    ft.
    Each
    1.18" Minimum Object Size Detected
    13"On When Object Absent1 to 3224700PNP4-Pole M125-Pole M1218.1"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N12000000000
    19.3"On When Object Absent1 to 3224700PNP4-Pole M125-Pole M1224.4"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N1400000000
    25.6"On When Object Absent1 to 3224700PNP4-Pole M125-Pole M1230.7"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N1600000000
    28.7"On When Object Absent1 to 3224700PNP4-Pole M125-Pole M1233.9"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N1800000000
    35"On When Object Absent1 to 3224700PNP4-Pole M125-Pole M1240.2"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N2100000000
    38.2"On When Object Absent1 to 3224700PNP4-Pole M125-Pole M1243.3"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N2300000000
    47.6"On When Object Absent1 to 3224700PNP4-Pole M125-Pole M1252.8"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N2500000000
    53.9"On When Object Absent1 to 3224700PNP4-Pole M125-Pole M1259.1"2.4"2.4"PolycarbonateYellowFour Fixed Mounting Brackets338403N2700000000
     
    Safety Relays

    Safety Light Curtains for Long Distances

    Image of ProductInUse. Front orientation. Contains Annotated. Safety Light Curtains. Safety Light Curtains for Long Distances.
    Spanning up to 230 ft.—roughly the length of a commercial airplane—these safety light curtains cut power to large machinery to prevent damage or injury. They trigger the instant a person or object crosses the light beams between the transmitter and receiver. To selectively allow material to pass through the sensing field, you can program the system to allow one or more beams to be broken without shutting off your machine. To create a perimeter guard that bends around corners, add mirrors to reflect light beams at an angle. Rated IP67, these curtains withstand wet conditions.
    For a complete switching system, combine a transmitter and receiver, safety relay, and connectors (all sold separately).
    All curtains require four fixed or four swivel brackets. Swivel brackets can be adjusted during and after installation for easy alignment.
    For the Manufacturer User Manual, click on a part number and select Product Detail.
    Note: These curtains cannot be used with a full-revolution clutch press or machine. Use only with machinery that can consistently and immediately stop anywhere in its cycle.
    Body-Safe Transmitters and Receivers (IP67)
    Image of Product. Front orientation. Safety Light Curtains. Safety Light Curtains for Long Distances, Body Safe.
    Image of Product. Fixed Brackets. Front orientation. Safety Light Curtains. Safety Light Curtains for Long Distances.
    Image of Product. Swivel Brackets. Front orientation. Safety Light Curtain Brackets. Safety Light Curtains for Long Distances.

    Fixed Brackets

    Swivel Brackets

    Light Curtains
    Replacement
    Fixed Brackets
    Swivel Brackets
    Plug Type
    Light Beam
    Ht.
    Light Beam Switch
    Operation
    Sensing Distance,
    ft.
    Input Voltage,
    V DC
    Current
    Output, mA
    Output Digital
    Signal
    Transmitter
    Receiver
    Ht.
    Wd.
    Dp.
    Housing
    Material
    Color
    Cable Lg.,
    ft.
    Each
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    11.8" Minimum Object Size Detected
    35.4"On When Object Absent1 to 23024140PNP/NPN5-Pole M128-Pole M1242.1"1.3"1.5"Painted AluminumYellow18690N1300000000028690N1500000027774K1210000000
     
    15.7" Minimum Object Size Detected
    31.5"On When Object Absent1 to 23024130PNP/NPN5-Pole M128-Pole M1238.2"1.3"1.5"Painted AluminumYellow18690N120000000028690N150000027774K121000000
    47.2"On When Object Absent1 to 23024140PNP/NPN5-Pole M128-Pole M1253.9"1.3"1.5"Painted AluminumYellow18690N140000000028690N150000027774K121000000
     
    19.7" Minimum Object Size Detected
    19.7"On When Object Absent1 to 23024120PNP/NPN5-Pole M128-Pole M1226.4"1.3"1.5"Painted AluminumYellow18690N110000000028690N150000027774K121000000
     
    Accessories for Light Curtains
    back to top