Búsqueda de Productos

    BUSQUE AHORA TODAS SUS VAISALA SENSOR SYS SOLUCIONES

    Radwell está aquí para proveer todas sus necesidades de planta.

    Radwell es un distribuidor, revendedor o representante autorizado de los productos que aparecen en este sitio web. Todos los nombres de productos, marcas registradas, marcas y logotipos usados en este sitio son propiedad de sus respectivos propietarios. La representación, descripción o venta de productos con estos nombres, marcas registradas, marcas y logotipos tiene únicamente fines identificativos y no pretende indicar afiliación o autorización alguna por parte de ninguno de los poseedores de los derechos.

    Resultados del filtro
    Resultados 951-1000 de 995.
    VAISALA SENSOR SYS HM40D2BB

    VAISALA SENSOR SYS

    HM40D2BB

    HAND-HELD HUMIDITY AND TEMPERATURE METER, STAINLESS STEEL PROBE (HM46PROBE) WITH SINTERED FILTER (HM46), NIMH RECHARGEABLE BATTERIES (4 PCS), FOR LONG PROBES, ENGLISH
    $1.849,00 Nuevo $1.849,00
    $1.110,00
    VAISALA SENSOR SYS HM40D2BA

    VAISALA SENSOR SYS

    HM40D2BA

    HAND-HELD HUMIDITY AND TEMPERATURE METER, STAINLESS STEEL PROBE (HM46PROBE) WITH SINTERED FILTER (HM46), NIMH RECHARGEABLE BATTERIES (4 PCS), FOR LONG PROBES, NO MANUAL (QUICK GUIDE ONLY)
    $1.849,00 Nuevo $1.849,00
    $1.110,00
    VAISALA SENSOR SYS HM40D1AA

    VAISALA SENSOR SYS

    HM40D1AA

    HAND-HELD HUMIDITY AND TEMPERATURE METER, STAINLESS STEEL PROBE (HM46PROBE) WITH SINTERED FILTER (HM46), ALKALINE BATTERIES, FOR SHORT PROBES, NO MANUAL (QUICK GUIDE ONLY)
    $1.804,00 Nuevo $1.804,00
    $1.083,00
    VAISALA SENSOR SYS PTU30012A01A1BAAA1A1B2BAB0B1A

    VAISALA SENSOR SYS

    PTU30012A01A1BAAA1A1B2BAB0B1A

    PTU3001 TRANSMITTER,FOR WALL MOUNTING, 500...1100 HPA CLASS B, GRAPHICAL/KEYPAD, 10...35 VDC, 24 VAC, RS232C+ALOG, RH (0...100 %RH) CH1, METRIC, RELAY, CONDUIT, WALL PLATE, ENG, CABLE FOR PC ...
    $4.491,00 Nuevo $4.491,00
    $2.695,00
    Repare los suyos $2.237,00
    VAISALA SENSOR SYS PTU30012A01A1ABAA1B0B1AAB0B1A

    VAISALA SENSOR SYS

    PTU30012A01A1ABAA1B0B1AAB0B1A

    PTU3001 TRANSMITTER,FOR WALL MOUNTING, 500...1100 HPA CLASS B, GRAPHICAL/KEYPAD, 10...35 VDC, 24 VAC, RS232C+ALOG, RH (0...100 %RH) CH2, CONDUIT, ENG, CABLE FOR PC USB, ISO9001
    $3.970,00 Nuevo $3.970,00
    $2.382,00
    Repare los suyos $1.978,00
    VAISALA SENSOR SYS PTU30012A01A0BAAA1B0A2AAB0B1A

    VAISALA SENSOR SYS

    PTU30012A01A0BAAA1B0A2AAB0B1A

    PTU3001 TRANSMITTER,FOR WALL MOUNTING, 500...1100 HPA CLASS B, GRAPHICAL/KEYPAD, 10...35 VDC, 24 VAC, RS232C, RH (0...100 %RH) CH1, GLAND, ENG, CABLE FOR PC USB, ISO9001
    $4.032,00 Nuevo $4.032,00
    $2.420,00
    Repare los suyos $2.009,00
    VAISALA SENSOR SYS PTU30012A01A0ABAB1A0A2BAB0B0A

    VAISALA SENSOR SYS

    PTU30012A01A0ABAB1A0A2BAB0B0A

    PTU3001 TRANSMITTER,FOR WALL MOUNTING, 500...1100 HPA CLASS B, GRAPHICAL/KEYPAD, 10...35 VDC, 24 VAC, RS232C, RH (0...100 %RH) CH2, -40...+140 °F TEMP, METRIC, GLAND, WALL PLATE, ENG, ISO900 ...
    $4.080,00 Nuevo $4.080,00
    $2.448,00
    Repare los suyos $2.032,00
    VAISALA SENSOR SYS PTU30012A00A0BBAB1B1B1BAB0B1A

    VAISALA SENSOR SYS

    PTU30012A00A0BBAB1B1B1BAB0B1A

    PTU3001 TRANSMITTER,FOR WALL MOUNTING, 500...1100 HPA CLASS B, 10...35 VDC, 24 VAC, RS232C, RH (0...100 %RH) CH1, RH (0...100 %RH) CH2, -40...+140 °F TEMP, RELAY, CONDUIT, WALL PLATE, ENG, C ...
    $4.063,00 Nuevo $4.063,00
    $2.438,00
    Repare los suyos $2.024,00
    VAISALA SENSOR SYS PTU30012A00A0ABAA1B1B2BAB0B0A

    VAISALA SENSOR SYS

    PTU30012A00A0ABAA1B1B2BAB0B0A

    PTU3001 TRANSMITTER,FOR WALL MOUNTING, 500...1100 HPA CLASS B, 10...35 VDC, 24 VAC, RS232C, RH (0...100 %RH) CH2, RELAY, CONDUIT, WALL PLATE, ENG, ISO9001
    $4.040,00 Nuevo $4.040,00
    $2.424,00
    Repare los suyos $2.012,00
    VAISALA SENSOR SYS HM40C3BB

    VAISALA SENSOR SYS

    HM40C3BB

    HAND-HELD HUMIDITY AND TEMPERATURE METER, 4MM THIN PROBE (HM42PROBE) WITH MEMBRANE FILTER (HM42), EXTERNAL BATTERY RECHARGER W/ USB CONNECTION, 2 BATTERIES, FOR LONG PROBES, ENGLISH
    $2.048,00 Nuevo $2.048,00
    $1.229,00
    VAISALA SENSOR SYS HM40C3BA

    VAISALA SENSOR SYS

    HM40C3BA

    HAND-HELD HUMIDITY AND TEMPERATURE METER, 4MM THIN PROBE (HM42PROBE) WITH MEMBRANE FILTER (HM42), EXTERNAL BATTERY RECHARGER W/ USB CONNECTION, 2 BATTERIES, FOR LONG PROBES, NO MANUAL (QUICK ...
    $2.048,00 Nuevo $2.048,00
    $1.229,00
    VAISALA SENSOR SYS HM40C1BB

    VAISALA SENSOR SYS

    HM40C1BB

    HAND-HELD HUMIDITY AND TEMPERATURE METER, 4MM THIN PROBE (HM42PROBE) WITH MEMBRANE FILTER (HM42), ALKALINE BATTERIES, FOR LONG PROBES, ENGLISH
    $1.974,00 Nuevo $1.974,00
    $1.185,00
    VAISALA SENSOR SYS HM40C1BA

    VAISALA SENSOR SYS

    HM40C1BA

    HAND-HELD HUMIDITY AND TEMPERATURE METER, 4MM THIN PROBE (HM42PROBE) WITH MEMBRANE FILTER (HM42), ALKALINE BATTERIES, FOR LONG PROBES, NO MANUAL (QUICK GUIDE ONLY)
    $1.974,00 Nuevo $1.974,00
    $1.185,00
    VAISALA SENSOR SYS HM40B2BB

    VAISALA SENSOR SYS

    HM40B2BB

    HAND-HELD HUMIDITY AND TEMPERATURE METER, REMOTE PROBE WITH HANDLE, HMP113+HM40HANDLE (HM45), NIMH RECHARGEABLE BATTERIES (4 PCS), FOR LONG PROBES, ENGLISH
    $1.143,00 Nuevo $1.143,00
    $686,00
    VAISALA SENSOR SYS HM40B2BA

    VAISALA SENSOR SYS

    HM40B2BA

    HAND-HELD HUMIDITY AND TEMPERATURE METER, REMOTE PROBE WITH HANDLE, HMP113+HM40HANDLE (HM45), NIMH RECHARGEABLE BATTERIES (4 PCS), FOR LONG PROBES, NO MANUAL (QUICK GUIDE ONLY)
    $1.143,00 Nuevo $1.143,00
    $686,00
    VAISALA SENSOR SYS HM40B2AB

    VAISALA SENSOR SYS

    HM40B2AB

    HAND-HELD HUMIDITY AND TEMPERATURE METER, REMOTE PROBE WITH HANDLE, HMP113+HM40HANDLE (HM45), NIMH RECHARGEABLE BATTERIES (4 PCS), FOR SHORT PROBES, ENGLISH
    $1.143,00 Nuevo $1.143,00
    $686,00
    VAISALA SENSOR SYS HMK15A1101B02A

    VAISALA SENSOR SYS

    HMK15A1101B02A

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, LICL SALT (11 %RH) FOR ONE CHAMBER, MGCL2 SALT (33 %RH) FOR ONE CHAMBER, NO NACL SALT, K2SO4 SALT (97 %RH) FOR ONE CHAMBER, ION EXCHAN ...
    $1.416,00 Nuevo $1.416,00
    $850,00
    Repare los suyos $706,00
    VAISALA SENSOR SYS HMK15A1022B02A

    VAISALA SENSOR SYS

    HMK15A1022B02A

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, LICL SALT (11 %RH) FOR ONE CHAMBER, NO MGCL2 SALT, NACL SALT (75 %RH) FOR TWO CHAMBERS, K2SO4 SALT (97 %RH) FOR TWO CHAMBERS, ION EXCH ...
    $1.555,00 Nuevo $1.555,00
    $933,00
    Repare los suyos $775,00
    VAISALA SENSOR SYS HMK15A1022A02B

    VAISALA SENSOR SYS

    HMK15A1022A02B

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, LICL SALT (11 %RH) FOR ONE CHAMBER, NO MGCL2 SALT, NACL SALT (75 %RH) FOR TWO CHAMBERS, K2SO4 SALT (97 %RH) FOR TWO CHAMBERS, NO WATER ...
    $1.548,00 Nuevo $1.548,00
    $929,00
    Repare los suyos $772,00
    VAISALA SENSOR SYS HMK15A1020B02A

    VAISALA SENSOR SYS

    HMK15A1020B02A

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, LICL SALT (11 %RH) FOR ONE CHAMBER, NO MGCL2 SALT, NACL SALT (75 %RH) FOR TWO CHAMBERS, NO K2SO4 SALT, ION EXCHANGED WATER FOR HMK15, ...
    $1.367,00 Nuevo $1.367,00
    $821,00
    Repare los suyos $682,00
    VAISALA SENSOR SYS HMK15A1020A02B

    VAISALA SENSOR SYS

    HMK15A1020A02B

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, LICL SALT (11 %RH) FOR ONE CHAMBER, NO MGCL2 SALT, NACL SALT (75 %RH) FOR TWO CHAMBERS, NO K2SO4 SALT, NO WATER, NO CARRYING CASE, NO ...
    $1.360,00 Nuevo $1.360,00
    $816,00
    Repare los suyos $678,00
    VAISALA SENSOR SYS HMK15A1011A02B

    VAISALA SENSOR SYS

    HMK15A1011A02B

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, LICL SALT (11 %RH) FOR ONE CHAMBER, NO MGCL2 SALT, NACL SALT (75 %RH) FOR ONE CHAMBER, K2SO4 SALT (97 %RH) FOR ONE CHAMBER, NO WATER, ...
    $1.407,00 Nuevo $1.407,00
    $845,00
    Repare los suyos $702,00
    VAISALA SENSOR SYS HMK15A1002A02B

    VAISALA SENSOR SYS

    HMK15A1002A02B

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, LICL SALT (11 %RH) FOR ONE CHAMBER, NO MGCL2 SALT, NO NACL SALT, K2SO4 SALT (97 %RH) FOR TWO CHAMBERS, NO WATER, NO CARRYING CASE, NO ...
    $1.360,00 Nuevo $1.360,00
    $816,00
    Repare los suyos $678,00
    VAISALA SENSOR SYS HMK15A1002A02A

    VAISALA SENSOR SYS

    HMK15A1002A02A

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, LICL SALT (11 %RH) FOR ONE CHAMBER, NO MGCL2 SALT, NO NACL SALT, K2SO4 SALT (97 %RH) FOR TWO CHAMBERS, NO WATER, NO CARRYING CASE, NO ...
    $1.341,00 Nuevo $1.341,00
    $805,00
    Repare los suyos $669,00
    VAISALA SENSOR SYS HMK15A1000A02B

    VAISALA SENSOR SYS

    HMK15A1000A02B

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, LICL SALT (11 %RH) FOR ONE CHAMBER, NO MGCL2 SALT, NO NACL SALT, NO K2SO4 SALT, NO WATER, NO CARRYING CASE, NO KCL SALT, ENGLISH USER ...
    $1.171,00 Nuevo $1.171,00
    $703,00
    Repare los suyos $584,00
    VAISALA SENSOR SYS HMK15A1000A02A

    VAISALA SENSOR SYS

    HMK15A1000A02A

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, LICL SALT (11 %RH) FOR ONE CHAMBER, NO MGCL2 SALT, NO NACL SALT, NO K2SO4 SALT, NO WATER, NO CARRYING CASE, NO KCL SALT, NO USER'S GUI ...
    $1.152,00 Nuevo $1.152,00
    $692,00
    Repare los suyos $575,00
    VAISALA SENSOR SYS HMK15A0112B02B

    VAISALA SENSOR SYS

    HMK15A0112B02B

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, NO LICL SALT, MGCL2 SALT (33 %RH) FOR ONE CHAMBER, NACL SALT (75 %RH) FOR ONE CHAMBER, K2SO4 SALT (97 %RH) FOR TWO CHAMBERS, ION EXCHA ...
    $1.503,00 Nuevo $1.503,00
    $902,00
    Repare los suyos $749,00
    VAISALA SENSOR SYS HMK15A0110B02B

    VAISALA SENSOR SYS

    HMK15A0110B02B

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, NO LICL SALT, MGCL2 SALT (33 %RH) FOR ONE CHAMBER, NACL SALT (75 %RH) FOR ONE CHAMBER, NO K2SO4 SALT, ION EXCHANGED WATER FOR HMK15, N ...
    $1.315,00 Nuevo $1.315,00
    $789,00
    Repare los suyos $655,00
    VAISALA SENSOR SYS HMK15A0101B02B

    VAISALA SENSOR SYS

    HMK15A0101B02B

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, NO LICL SALT, MGCL2 SALT (33 %RH) FOR ONE CHAMBER, NO NACL SALT, K2SO4 SALT (97 %RH) FOR ONE CHAMBER, ION EXCHANGED WATER FOR HMK15, N ...
    $1.315,00 Nuevo $1.315,00
    $789,00
    Repare los suyos $655,00
    VAISALA SENSOR SYS HMK15A0022B02B

    VAISALA SENSOR SYS

    HMK15A0022B02B

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, NO LICL SALT, NO MGCL2 SALT, NACL SALT (75 %RH) FOR TWO CHAMBERS, K2SO4 SALT (97 %RH) FOR TWO CHAMBERS, ION EXCHANGED WATER FOR HMK15, ...
    $1.456,00 Nuevo $1.456,00
    $874,00
    Repare los suyos $726,00
    VAISALA SENSOR SYS HMK15A0022B02A

    VAISALA SENSOR SYS

    HMK15A0022B02A

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, NO LICL SALT, NO MGCL2 SALT, NACL SALT (75 %RH) FOR TWO CHAMBERS, K2SO4 SALT (97 %RH) FOR TWO CHAMBERS, ION EXCHANGED WATER FOR HMK15, ...
    $1.438,00 Nuevo $1.438,00
    $863,00
    Repare los suyos $717,00
    VAISALA SENSOR SYS HMK15A0020B02A

    VAISALA SENSOR SYS

    HMK15A0020B02A

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, NO LICL SALT, NO MGCL2 SALT, NACL SALT (75 %RH) FOR TWO CHAMBERS, NO K2SO4 SALT, ION EXCHANGED WATER FOR HMK15, NO CARRYING CASE, NO K ...
    $1.250,00 Nuevo $1.250,00
    $750,00
    Repare los suyos $623,00
    VAISALA SENSOR SYS HMK15A0011B02A

    VAISALA SENSOR SYS

    HMK15A0011B02A

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, NO LICL SALT, NO MGCL2 SALT, NACL SALT (75 %RH) FOR ONE CHAMBER, K2SO4 SALT (97 %RH) FOR ONE CHAMBER, ION EXCHANGED WATER FOR HMK15, N ...
    $1.298,00 Nuevo $1.298,00
    $779,00
    Repare los suyos $647,00
    VAISALA SENSOR SYS HMK15A0002B02A

    VAISALA SENSOR SYS

    HMK15A0002B02A

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, NO LICL SALT, NO MGCL2 SALT, NO NACL SALT, K2SO4 SALT (97 %RH) FOR TWO CHAMBERS, ION EXCHANGED WATER FOR HMK15, NO CARRYING CASE, NO K ...
    $1.250,00 Nuevo $1.250,00
    $750,00
    Repare los suyos $623,00
    VAISALA SENSOR SYS HMK15A0002A02B

    VAISALA SENSOR SYS

    HMK15A0002A02B

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, NO LICL SALT, NO MGCL2 SALT, NO NACL SALT, K2SO4 SALT (97 %RH) FOR TWO CHAMBERS, NO WATER, NO CARRYING CASE, NO KCL SALT, ENGLISH USER ...
    $1.242,00 Nuevo $1.242,00
    $746,00
    Repare los suyos $620,00
    VAISALA SENSOR SYS HMK15A0000A02B

    VAISALA SENSOR SYS

    HMK15A0000A02B

    HUMIDITY CALIBRATOR, TWO SALT CHAMBERS WITH BASIC LIDS, NO LICL SALT, NO MGCL2 SALT, NO NACL SALT, NO K2SO4 SALT, NO WATER, NO CARRYING CASE, NO KCL SALT, ENGLISH USER GUIDE FOR HMK15
    $1.054,00 Nuevo $1.054,00
    $633,00
    Repare los suyos $526,00
    VAISALA SENSOR SYS HMD1102D1VA0NN

    VAISALA SENSOR SYS

    HMD1102D1VA0NN

    HUMIDITY AND TEMPERATURE TRANSMITTER, HMD110, 4 ...20 MA OUTPUT SIGNALS, TW (-40 ... +60°C), T (-40 ... +60°C), HUMICAP180R, NO USER GUIDE
    $539,00 Nuevo $539,00
    $324,00
    VAISALA SENSOR SYS HMD1102B1VA0NN

    VAISALA SENSOR SYS

    HMD1102B1VA0NN

    HUMIDITY AND TEMPERATURE TRANSMITTER, HMD110, 4 ...20 MA OUTPUT SIGNALS, TD, T (-40 ... +60°C), HUMICAP180R, NO USER GUIDE
    $539,00 Nuevo $539,00
    $324,00
    VAISALA SENSOR SYS HM70D2C1A1AA

    VAISALA SENSOR SYS

    HM70D2C1A1AA

    HAND-HELD HUMIDITY AND TEMPERATURE METER, RECHARGEABLE WITH US AC-ADAPTER, ANALOG OUTPUT-SIGNAL CABLE (27168ZZ), HMP76B (CHEMICAL PURGE AND SENSOR PREHEATING), AT ROOM TEMPERATURE, NO ACCESS ...
    $3.645,00 Nuevo $3.645,00
    $2.187,00
    VAISALA SENSOR SYS HM70D2C1A0AB

    VAISALA SENSOR SYS

    HM70D2C1A0AB

    HAND-HELD HUMIDITY AND TEMPERATURE METER, RECHARGEABLE WITH US AC-ADAPTER, ANALOG OUTPUT-SIGNAL CABLE (27168ZZ), HMP76B (CHEMICAL PURGE AND SENSOR PREHEATING), AT ROOM TEMPERATURE, NO ACCESS ...
    $3.258,00 Nuevo $3.258,00
    $1.955,00
    VAISALA SENSOR SYS HM70D2C1A0AA

    VAISALA SENSOR SYS

    HM70D2C1A0AA

    HAND-HELD HUMIDITY AND TEMPERATURE METER, RECHARGEABLE WITH US AC-ADAPTER, ANALOG OUTPUT-SIGNAL CABLE (27168ZZ), HMP76B (CHEMICAL PURGE AND SENSOR PREHEATING), AT ROOM TEMPERATURE, NO ACCESS ...
    $3.258,00 Nuevo $3.258,00
    $1.955,00
    VAISALA SENSOR SYS HM70D2A1A0AB

    VAISALA SENSOR SYS

    HM70D2A1A0AB

    HAND-HELD HUMIDITY AND TEMPERATURE METER, RECHARGEABLE WITH US AC-ADAPTER, ANALOG OUTPUT-SIGNAL CABLE (27168ZZ), HMP75, AT ROOM TEMPERATURE, NO ACCESSORIES, NO CONNECTION CABLE, NO CARRYING ...
    $2.772,00 Nuevo $2.772,00
    $1.664,00
    VAISALA SENSOR SYS HM70D2A1A0AA

    VAISALA SENSOR SYS

    HM70D2A1A0AA

    HAND-HELD HUMIDITY AND TEMPERATURE METER, RECHARGEABLE WITH US AC-ADAPTER, ANALOG OUTPUT-SIGNAL CABLE (27168ZZ), HMP75, AT ROOM TEMPERATURE, NO ACCESSORIES, NO CONNECTION CABLE, NO CARRYING ...
    $2.772,00 Nuevo $2.772,00
    $1.664,00
    VAISALA SENSOR SYS HM70D1F1A1AB

    VAISALA SENSOR SYS

    HM70D1F1A1AB

    HAND-HELD HUMIDITY AND TEMPERATURE METER, RECHARGEABLE WITH US AC-ADAPTER, MI70LINK SOFTWARE WITH RS232 CABLE (MI70LINK), HMP75B (CHEMICAL PURGE AND SENSOR PREHEATING), AT ROOM TEMPERATURE, ...
    $3.281,00 Nuevo $3.281,00
    $1.969,00
    VAISALA SENSOR SYS HM70D1C1A0AB

    VAISALA SENSOR SYS

    HM70D1C1A0AB

    HAND-HELD HUMIDITY AND TEMPERATURE METER, RECHARGEABLE WITH US AC-ADAPTER, MI70LINK SOFTWARE WITH RS232 CABLE (MI70LINK), HMP76B (CHEMICAL PURGE AND SENSOR PREHEATING), AT ROOM TEMPERATURE, ...
    $3.330,00 Nuevo $3.330,00
    $1.998,00
    Anterior
    10 11 12 13 14 15 16 17 18 19 20