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    Sensors & Switches / Sensor Controller

    Radwell is not an authorised distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorisation by any rights holder.

    Rockwell Disclaimer: The product is used surplus. Radwell is not an authorised surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorised dealers. Because Radwell is not an authorised distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, Radwell makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Radwell also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. Radwell also makes no representations as to your right to install any such firmware on the product. Radwell will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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    32 Results.
    HONEYWELL M-700138

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700138

    IR-F9-R134A-0/1000-COM, R134A 0/1,000 PPM, COMMERCIAL ENCLOSURE
    £2,110.63 Price with VAT: £2,532.76 Buy Surplus As Low As £1,266.53 Price with VAT: £1,519.84
    £1,266.53 Price with VAT: £1,519.84
    Repair Yours £1,051.91 Price with VAT: £1,262.30
    HONEYWELL M-700140

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700140

    IR-F9-R507A-0/1000-COM, R507A 0/1,000 PPM, COMMERCIAL ENCLOSURE
    £2,186.96 Price with VAT: £2,624.35 Buy Surplus As Low As £1,312.63 Price with VAT: £1,575.15
    £1,312.63 Price with VAT: £1,575.15
    Repair Yours £1,089.70 Price with VAT: £1,307.64
    HONEYWELL 129435-L3

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    129435-L3

    CHLORINE (CL2) EXPLOSION PROOF SENSOR
    £1,068.54 Price with VAT: £1,282.25 Buy Surplus As Low As £641.58 Price with VAT: £769.89
    £641.58 Price with VAT: £769.89
    Repair Yours £532.76 Price with VAT: £639.31
    HONEYWELL 1309A0039

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1309A0039

    DISCONTINUED BY MANUFACTURER, HYDROGEN (H2), -40 TO 50C (-40 TO 122F)
    Buy Surplus As Low As £370.12 Price with VAT: £444.14
    £370.12 Price with VAT: £444.14
    Repair Yours £307.34 Price with VAT: £368.81
    HONEYWELL 1309A0040

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1309A0040

    METHANE (CH4); -40° TO 50°C (-40° TO 122°F)
    £359.71 Price with VAT: £431.65 Buy Surplus As Low As £216.13 Price with VAT: £259.35
    £216.13 Price with VAT: £259.35
    Repair Yours £179.85 Price with VAT: £215.82
    HONEYWELL 1309A0056

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1309A0056

    E³POINT REMOTE SENSOR, OXYGEN (O2)
    £426.96 Price with VAT: £512.36 Buy Surplus As Low As £256.18 Price with VAT: £307.41
    £256.18 Price with VAT: £307.41
    Repair Yours £213.10 Price with VAT: £255.72
    HONEYWELL 1309A0057

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1309A0057

    E³POINT REMOTE SENSOR, NITROGEN DIOXIDE (NO2)
    £414.47 Price with VAT: £497.36 Buy Surplus As Low As £248.68 Price with VAT: £298.42
    £248.68 Price with VAT: £298.42
    Repair Yours £217.21 Price with VAT: £260.65
    HONEYWELL M-507546

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-507546

    NH3 (500 PPM), AIR BALANCE, 58 L
    £801.03 Price with VAT: £961.23 Buy Surplus As Low As £480.62 Price with VAT: £576.74
    £480.62 Price with VAT: £576.74
    Repair Yours £399.00 Price with VAT: £478.80
    HONEYWELL M-700123

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700123

    301EM-20 LIGHT STACK ASSEMBLY
    £766.27 Price with VAT: £919.52 Buy Surplus As Low As £460.21 Price with VAT: £552.26
    £460.21 Price with VAT: £552.26
    Repair Yours £382.38 Price with VAT: £458.85
    HONEYWELL SS2D51

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    SS2D51

    SMOKE DETECTOR, PHOTOELECTRIC, 4 WIRE, REQUIRES BASE
    £87.66 Price with VAT: £105.19 Buy Surplus As Low As £52.90 Price with VAT: £63.48
    £52.90 Price with VAT: £63.48
    HONEYWELL MDL3W

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    MDL3W

    SYNC CIRCUIT MODULE 12/24VDC WHITE
    £87.66 Price with VAT: £105.19 Buy Surplus As Low As £52.90 Price with VAT: £63.48
    £52.90 Price with VAT: £63.48
    HONEYWELL M-700061

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700061

    IR-F9-R407A-0/1000-COM, R407A 0/1,000 PPM, COMMERCIAL ENCLOSURE
    £2,186.96 Price with VAT: £2,624.35 Buy Surplus As Low As £1,312.63 Price with VAT: £1,575.15
    £1,312.63 Price with VAT: £1,575.15
    Repair Yours £1,089.70 Price with VAT: £1,307.64
    HONEYWELL M-700081

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700081

    IR-F9-R410A-0/1000-COM, R410A 0/1,000 PPM, COMMERCIAL ENCLOSURE
    £2,186.96 Price with VAT: £2,624.35 Buy Surplus As Low As £1,312.63 Price with VAT: £1,575.15
    £1,312.63 Price with VAT: £1,575.15
    Repair Yours £1,089.70 Price with VAT: £1,307.64
    HONEYWELL M-700137

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-700137

    IR-F9-R22-0/1000-COM, R22 0/1,000 PPM, COMMERCIAL ENCLOSURE
    £2,110.63 Price with VAT: £2,532.76 Buy Surplus As Low As £1,266.53 Price with VAT: £1,519.84
    £1,266.53 Price with VAT: £1,519.84
    Repair Yours £1,051.91 Price with VAT: £1,262.30
    HONEYWELL 129432-L3

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    129432-L3

    NITROGEN DIOXIDE (NO2) EXPLOSION PROOF SENSOR
    £836.54 Price with VAT: £1,003.85 Buy Surplus As Low As £502.53 Price with VAT: £603.04
    £502.53 Price with VAT: £603.04
    Repair Yours £417.14 Price with VAT: £500.57
    HONEYWELL 129570-L3

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    129570-L3

    COMBUSTIBLE EXPLOSION PROOF SENSOR - (GAIN 1.0-1.3 / METHANE)
    £1,045.11 Price with VAT: £1,254.14 Buy Surplus As Low As £627.22 Price with VAT: £752.66
    £627.22 Price with VAT: £752.66
    Repair Yours £520.67 Price with VAT: £624.80
    HONEYWELL 1309A0035

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1309A0035

    HYDROGEN SULFIDE (H2S); -40° TO 50°C (-40° TO 122°F)
    £359.71 Price with VAT: £431.65 Buy Surplus As Low As £216.13 Price with VAT: £259.35
    £216.13 Price with VAT: £259.35
    Repair Yours £179.85 Price with VAT: £215.82
    HONEYWELL 1309A0041

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1309A0041

    PROPANE (C3H8); -40° TO 50°C (-40° TO 122°F)
    £359.71 Price with VAT: £431.65 Buy Surplus As Low As £216.13 Price with VAT: £259.35
    £216.13 Price with VAT: £259.35
    Repair Yours £179.85 Price with VAT: £215.82
    HONEYWELL 1309A0059

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1309A0059

    E³POINT REMOTE SENSOR, HYDROGEN (H2)
    £200.26 Price with VAT: £240.31 Buy Surplus As Low As £120.15 Price with VAT: £144.18
    £120.15 Price with VAT: £144.18
    Repair Yours £151.14 Price with VAT: £181.36
    HONEYWELL 1309A0061

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1309A0061

    E³POINT REMOTE SENSOR, METHANE (CH4)
    £426.96 Price with VAT: £512.36 Buy Surplus As Low As £256.18 Price with VAT: £307.41
    £256.18 Price with VAT: £307.41
    Repair Yours £213.10 Price with VAT: £255.72
    HONEYWELL 1309A0062

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1309A0062

    E³POINT REMOTE SENSOR, PROPANE (C3H8)
    £414.47 Price with VAT: £497.36 Buy Surplus As Low As £248.68 Price with VAT: £298.42
    £248.68 Price with VAT: £298.42
    Repair Yours £217.21 Price with VAT: £260.65
    HONEYWELL MDL3R

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    MDL3R

    SYNC CIRCUIT MODULE 12/24VDC
    £87.66 Price with VAT: £105.19 Buy Surplus As Low As £52.90 Price with VAT: £63.48
    £52.90 Price with VAT: £63.48
    HONEYWELL 1309A0037

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1309A0037

    NITROGEN DIOXIDE (NO2); -40° TO 50°C (-40° TO 122°F)
    £359.71 Price with VAT: £431.65 Buy Surplus As Low As £216.13 Price with VAT: £259.35
    £216.13 Price with VAT: £259.35
    Repair Yours £179.85 Price with VAT: £215.82
    HONEYWELL 129427-L3

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    129427-L3

    COMBUSTIBLE EXPLOSION PROOF SENSOR - (GAIN 1.6-1.999 / PROPANE, ETHANOL)
    £1,243.10 Price with VAT: £1,491.72 Buy Surplus As Low As £745.86 Price with VAT: £895.03
    £745.86 Price with VAT: £895.03
    Repair Yours £619.66 Price with VAT: £743.60
    HONEYWELL 129428-L3

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    129428-L3

    COMBUSTIBLE EXPLOSION PROOF SENSOR - (GAIN 2.0-2.219 / N-PENTANE)
    £1,243.10 Price with VAT: £1,491.72 Buy Surplus As Low As £745.86 Price with VAT: £895.03
    £745.86 Price with VAT: £895.03
    Repair Yours £619.66 Price with VAT: £743.60
    HONEYWELL 129429-L3

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    129429-L3

    COMBUSTIBLE EXPLOSION PROOF SENSOR - (GAIN 2.220-2.5 / TOLUENE)
    £1,243.10 Price with VAT: £1,491.72 Buy Surplus As Low As £745.86 Price with VAT: £895.03
    £745.86 Price with VAT: £895.03
    Repair Yours £619.66 Price with VAT: £743.60
    HONEYWELL 129430-L3

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    129430-L3

    COMBUSTIBLE EXPLOSION PROOF SENSOR - (GAIN +2.5 / N-DECANE)
    £1,243.10 Price with VAT: £1,491.72 Buy Surplus As Low As £745.86 Price with VAT: £895.03
    £745.86 Price with VAT: £895.03
    Repair Yours £619.66 Price with VAT: £743.60
    HONEYWELL LT-SEN-R

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    LT-SEN-R

    REFERENCE SENSOR
    £1,277.11 Price with VAT: £1,532.53 Buy Surplus As Low As £766.27 Price with VAT: £919.52
    £766.27 Price with VAT: £919.52
    Repair Yours £636.29 Price with VAT: £763.55
    HONEYWELL 129436-L3

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    129436-L3

    OXYGEN (O2) EXPLOSION PROOF SENSOR
    £1,070.81 Price with VAT: £1,284.97 Buy Surplus As Low As £643.09 Price with VAT: £771.71
    £643.09 Price with VAT: £771.71
    Repair Yours £534.27 Price with VAT: £641.12
    HONEYWELL 1309A0060

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    1309A0060

    REMOTE SENSOR, E3POINT, CARBON MONOXIDE (CO), (E3SRMCO)
    £494.22 Price with VAT: £593.06 Buy Surplus As Low As £296.98 Price with VAT: £356.38
    £296.98 Price with VAT: £356.38
    Repair Yours £247.11 Price with VAT: £296.53
    HONEYWELL 00705-A-1735

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    00705-A-1735

    COMBUSTIBLE SENSOR, 705 HIGH TEMPERATURE, 150 DEG C, UL, 3/4 NPT THREADS
    £1,023.95 Price with VAT: £1,228.75 Buy Surplus As Low As £614.37 Price with VAT: £737.25
    £614.37 Price with VAT: £737.25
    Repair Yours £510.09 Price with VAT: £612.11
    HONEYWELL M-501427

    HONEYWELL

    SILENT KNIGHT SECURITY SYS

    M-501427

    GAS SENSOR COMBUSTIBLE (LEL)
    £698.25 Price with VAT: £837.90 Buy Surplus As Low As £419.41 Price with VAT: £503.29
    £419.41 Price with VAT: £503.29
    Repair Yours £348.37 Price with VAT: £418.05
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