西門子S7-1500 PLC通信模塊6GK7542-6UX00-0XE0
西門子S7-1500 PLC通信模塊6GK7542-6UX00-0XE0
西門子S7-1500 PLC通信模塊6GK7542-6UX00-0XE0
交換是按照通信兩端傳輸信息的需要，用人工或設備自動完成的方法，把要傳輸的信息送到符合要求的相應路由上的技術的統稱。交換機根據工作位置的不同，可以分為廣域網交換機和局域網交換機。廣域的交換機就是一種在通信系統中完成信息交換功能的設備，它應用在數據鏈路層。交換機有多個端口，每個端口都具有橋接功能，可以連接一個局域網或一臺高性能服務器或工作站。實際上，交換機有時被稱為多端口網橋。
網絡交換機，是一個擴大網絡的器材，能為子網絡中提供更多的連接端口，以便連接更多的計算機。隨著通信業的發展以及國民經濟信息化的推進，網絡交換機市場呈穩步上升態勢。它具有性價比高、高度靈活、相對簡單和易于實現等特點。以太網技術已成為當今最重要的一種局域網組網技術，網絡交換機也就成為了最普及的交換機。
Switch是交換機的英文名稱，這個產品是由原集線器的升級換代而來，在外觀上看和集線器沒有很大區別。由于通信兩端需要傳輸信息，而通過設備或者人工來把要傳輸的信息送到符合要求標準的對應的路由器上的方式，這個技術就是交換機技術。從廣義上來分析，在通信系統里對于信息交換功能實現的設備，就是交換機。
Hanna Instruments HI7639829/10 pH/EC/DO/Temp/Turb probe for HI9829
Hanna Instruments HI769828/100 Spare Temp. probe for HI9828 w/100m Cbl
Hanna Instruments HI769828/60 Spare DO/EC/C probe for HI9828 w/60m
Hanna Instruments HI769828/70 Spare DO/EC/C probe for HI9828 w/70m
Hanna Instruments HI769828/80 Spare DO/EC/C probe for HI9828 w/80m
Hanna Instruments HI769828/90 Spare DO/EC/C probe for HI9828 w/90m
Hanna Instruments HI8001-0400U Fertigation controller, Panel, 32, 115V
Hanna Instruments HI9828/4-01 Multiparameter Water meter w/4m Probe
HANSA MOTOREN FCM 225M-47HE MOTOR
Hanse Environmental TC-1
HANSEN GEAR REDUCER 83B 11-1, SHELF WORN RATED 125 HP AT 1750 RPM
HANSEN GEAR REDUCER RNE 34 - 31-1 SURPLUS
Hansen RDE43 275.49
HANSEN REFRIGERATION OIL CHILLER
HANSEN TRANSMISSIONS INTERNATIONAL TYPE NE21-AN-20 40 HP RPM 933 / 46.7 (GEARBOX
Hardinge 3 Jaw Chuck 2535H _ Thru-Hole 2-1/4"
HARDLY PHABRIX SxD DUAL LINK W/ ORIGINAL PACKAGING
Hardy HI 1756-2WS Series B Dual Weigh Scale Mod - with 30 Warrantee
Hardy HI 1756-2WS Series B Dual Weigh Scale Mod - EXLNT with 30 Warrantee
HARDY INSTRUMENTS HI 4050-PM-AC-EIP-N2-N3 WAVERSAVER C2
Hardy Instruments HI-1756-2WS Weigh Scale Module 1756-2WS WOW
HARDY INSTRUMENTS HI2160RC-RM-A1-E1 USPP HI2160RCRMA1E1
Hardy Instruments Load Cells Weight Controller 8489
HARFELY P90.1/PEFT Junior CONTROL UNIT / BURST-TESTER
HARFELY PHV 25.1 U-NETWORK 1,2/50us; 10/700us
HARLAND SIMON H4893P4075 INTELLA 310
Harland SIRIUS Patton Labeler Labelling Label Feed System Machine Serial # 7682
HARLEY CARDINAL GE TRANSFORMER OIL PUMPS QTY 8
Harmer & Simmons SM1800 Rectifier SM1800-50-33-DB
HARMON ELECTRONICS PMD-1 PHASE MOTION DETECTOR
HARMONIC DRIVE 472446-1 NSFP 4724461
HARMONIC DRIVE 472448-1 NSFP 4724481
HARMONIC DRIVE 479543-1 NSFP 4795431
Harmonic Drive and Electric Motor - Intromitter Drive A
HARMONIC DRIVE HTL8000-1L-AS-DC USPP HTL80001LASDC
Harmonic Drive HW9280634 Speed Reducer 32-120-347272-4 FRS-32-120-2-GR-SP
Harmonic Drive Systems AC Servo Motor MAC16-1B-CT1E
Harold Beck & Sons 14-108 LINEAR VALVE ACTUATOR 1800LBS THRUST
Harold Beck & Sons Actuator Model #11-305-046899-01-01
Harold Beck & Sons Group 11 Rotary Damper Drives and Actuators 11-155 045081-01-
HAROWE ENCODER 11BRCX-300-J10B
HAROWE SYSTEMS 11BRCX-300-G10/5 FNFP 11BRCX300G105
HARRINGTON HOISTS AH5000-P NSFP AH5000P
HARRIS 10307-1610-01 SPLITTER ASSEMBLY RF CONNECTOR BOARD NSN 5895-01-464-4365
HARRIS CORPORATION 101-115540-001 USPP 101115540001
HARRIS CORPORATION 12045-4001-102 NSFP 120454001102
HARRIS CORPORATION 193-115038-013 USPP 193115038013
HARRIS CORPORATION 193-115039-013 USPP 193115039013
Harris Dielectric RF System ATSC Digital TV Mask Filter Chan 9 20 KW-can retune
Harris Flexstar exciter
Harris Graphics STA7780 Electronics Board (Brand , never )
Harris RF-1310 AM/FM/SSB/ISB/CW Exciter
Hart 375 field communication unit
HART FIELDBUS 375 FIELD COMMUNICATOR WITH CASE, MANUAL, LEADS
Hart Scientific 7012
Hart Scientific 9107 Dry Well Calibrator Transcat 24344T with 1 Insert
HARTFORD 411BLFNBRMFBJ63 USPP 411BLFNBRMFBJ63
HARTFORD 411BLFNCOEMBJ6C NSFP 411BLFNCOEMBJ6C
Hartford Steam Boiler/LD-180P/LD180P/999-0267/9990267 OFFERS ACCEPTED
HARTMAN FIELD OVERVOLTAGE RELAY A-927AA NSN: 5945-00-719-4092 COIL 28V
HARTMAN RELAY BHR-125TH 5945-00-172-4002 123SCAV5242-1 250 AMPERES
HA-SH152CK Mitsubishi 3.5KW Servo Motor HASH152CK HA-SH152
HA-SH352CK Mitsubishi 3.5KW Servo Motor HASH352CK HA-SH352
HA-SH353 Mitsubishi 3.5KW Servo Motor HASH353
Hastings 6714 Ground / Jumper Assembly Tester w/ 6799 Hot Stick Tester Kit
HAUSER / 940-20001 COMPAX 0200-E
HAUSER HBV HBV 5000 SE0 SEO ( HBV5000 SE0 )
Hauser Parker COMPAX-M MOTION&CONTROL
Hauser Parker HLE 100 Linear Actuator Drive w/ Servo
Hauser Parker HLE 100 Linear Drive w/Servo 62" Travel w/Emerson DXM-455C & Neuga
Have the est N8972-60101 input module. Calibrated.
HAYSSEN 1078-7A-0002 I/O PC BOARD PART NO 1078 7A 0002
HAYSSEN 1078-7F-0054
HAYWARD DA10600FTP3 NSFP DA10600FTP3
HAYWARD EVT30KC2E24A NSFP EVT30KC2E24A
Hazardous Location Switch Gear. Stainless steel flameproof three phase plug EXD
HBC RADIOMATIC INC FSE-735 USPP FSE735
HBS DC Power Supply L25060X, Variable Powerstart Transformer,Semiconductor,lab
HCC HOFFMAN ENGINEERING PHOTOMETER TSP-904/LT S/N 384
HCN50924 SQUARE D PANELBOARD INTERIOR I-LINE 400A MLO 400A 600V 3P CIRCUIT (d)
HC-SFS152 Mitsubishi Servo Motor 200V 1500W 1.5KW 7.16Nm
HC-SFS202 Mitsubishi Servo Motor 200V 2000W 2.0KW 9.55Nm
HC-SFS502 Mitsubishi Servo Motor 200V 5000W 5.0KW 23.9Nm
HC-SFS702 Mitsubishi Servo Motor 200V 7000W 7.0KW 33.4Nm
HC-UFS502B MITSUBISHI SERVO MOTORS REMANUFACTURED
HD VideoScope with 5.8mm Semi-Rigid Probe a�“ Extech HDV610
HD VideoScope with 5.8mm Semi-Rigid Probe a�“ Extech HDV620
HD-1033/UA Integral Stirling Cryogenic Cyrocooler Thermal Camera Infrared FLIR
HD-3WXL CONTINUOUS DUTY HARD DRIVE DEGAUSSER- MACHINE WITH CASE
HD-3WXL CONTINUOUS DUTY HARD DRIVE DEGAUSSER- MACHINE WITH ONE
HD-3WXL CONTINUOUS DUTY HARD DRIVE DEGAUSSER WITH CASE/
HD64F2357 VTE14, Package TQFP-120, Date: 0B1, 600pcs.
HD64F2357F20 Microcontroller
HDMI OC-030M Fiber Optic Cables
HDR 2099108 USPP 2099108
HDS02.1-W040N-HS12-0 INDRAMAT CONTROLLERS REMANUFACTURED
HDS02.1-W040N-HS12-01-FW INDRAMAT CONTROLLERS REMANUFACTURED
HDS02.2-W040N INDRAMAT PLC MODULES REMANUFACTURED
HDS02.2-W040N-HS12 INDRAMAT DRIVES REMANUFACTURED
HDS03.2-W075N INDRAMAT DRIVES REMANUFACTURED
HDS03.2-W075N-HS12-01-FW INDRAMAT DRIVES REMANUFACTURED
HDS03.2-W075N-HS32-01-FW INDRAMAT DRIVES REMANUFACTURED
HDS03.2-W075N-HS45-01-FW INDRAMAT DRIVES REMANUFACTURED
HDS03.2-W100N-HS12-01-F INDRAMAT DRIVES REMANUFACTURED
HDS03.2-W100N-HS12-01-FW INDRAMAT DRIVES REMANUFACTURED
HDS04.2-W200N-HS79-0 INDRAMAT CONTROLLERS REMANUFACTURED
HDSIOC ROLLER B NOVELLUS 02-308058-00 VERSION 4.72
HDW SEBA KMT EZ-RESTORE LOCATOR L K~
HE697BEM600 Horner Electric GE Fanuc PLC I/O Controller
HEADER, 1.27MM, H:1.75MM, SMT, 50WAY, 15 11 050 2601000 2066957
HEADER, 1.27MM, H:1.75MM, SMT, 68WAY, 15 11 068 2601000 2066958
HEADER, 1.27MM, H:1.75MM, SMT, 80WAY, 15 11 080 2601000 2066959
HEADER, 1.27MM, H:3.25MM, SMT, 26WAY, 15 12 026 2601000 2066961
HEADER, 1.27MM, H:3.25MM, SMT, 50WAY, 15 12 050 2601000 2066962
HEADER, 1.27MM, H:3.25MM, SMT, 68WAY, 15 12 068 2601000 2066963
HEADER, 1.27MM, H:3.25MM, SMT, 80WAY, 15 12 080 2601000 2066964
Headers & Wire Housings 40P OPEN END PLUG 4640-6300 (50)
HEAT TIMER HWR USPP HWR
HEAT TIMER HWR-Q-G NSPP HWRQG
HEATSHRINK, 2:1, 76.2MM, 60M, TF21 76,2/38,1 BK 2070907
