西门子S7-1500 PLC通信模块6GK7542-6UX00-0XE0
西门子S7-1500 PLC通信模块6GK7542-6UX00-0XE0
西门子S7-1500 PLC通信模块6GK7542-6UX00-0XE0
交换是按照通信两端传输信息的需要，用人工或设备自动完成的方法，把要传输的信息送到符合要求的相应路由上的技术的统称。交换机根据工作位置的不同，可以分为广域网交换机和局域网交换机。广域的交换机就是一种在通信系统中完成信息交换功能的设备，它应用在数据链路层。交换机有多个端口，每个端口都具有桥接功能，可以连接一个局域网或一台高性能服务器或工作站。实际上，交换机有时被称为多端口网桥。
网络交换机，是一个扩大网络的器材，能为子网络中提供更多的连接端口，以便连接更多的计算机。随着通信业的发展以及国民经济信息化的推进，网络交换机市场呈稳步上升态势。它具有性价比高、高度灵活、相对简单和易于实现等特点。以太网技术已成为当今最重要的一种局域网组网技术，网络交换机也就成为了最普及的交换机。
Switch是交换机的英文名称，这个产品是由原集线器的升级换代而来，在外观上看和集线器没有很大区别。由于通信两端需要传输信息，而通过设备或者人工来把要传输的信息送到符合要求标准的对应的路由器上的方式，这个技术就是交换机技术。从广义上来分析，在通信系统里对于信息交换功能实现的设备，就是交换机。
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
