6ES7951-1AJ00-0AA0 亿佳只有对，没有贵
电阻式触摸屏不怕尘埃、水及污垢影响，能在恶劣环境下工作。但并且由于经常被触动，表层 ITO使用一段时间后会出现细小的裂纹，甚至变形，因此其寿命并不长久。 门槛低，成本相对价廉，优点是不受灰尘、温度、湿度的影响。缺点也很明显，外层屏膜很容易刮花，不能使用尖锐的物体点触屏面。电阻式触摸屏利用压力感应进行控制，它的表层是一层塑胶，底层是一层玻璃，能承受恶劣环境因素的干扰，但手感和透光性较差，适合佩带手套和不能用手直接触摸的场合。
表面声波式触摸屏
表面声波是超声波的一种，它是在介质（例如玻璃）表面 进行浅层传播的机械能量波。表面声波性能稳定、易于分析， 并且在横波传递过程中具有非常尖锐的频率特性。表面声波触摸屏的触摸屏部分可以是一块平面、球面或柱面的玻璃平 板, 安装在 CRT、LED、LCD或是等离子显示器屏幕的前面。这块玻璃平板只是一块纯粹的强化玻璃，没有任何贴膜和覆盖层。 玻璃屏的左上角和右下角各固定了竖直和水平方向的超声波 发射换能器, 右上角则固定了两个相应的超声波接收换能器， 玻璃屏的四边刻有由疏到密间隔非常精密的 45 度角反射条纹。在没有触摸的时候，接收信号的波形与参照波形一样。当手指触摸屏幕时，手指吸收了一部分声波能量，控制器 侦测到接收信号在某一时刻的衰减，由此可以计算出触摸点 的位置。除了一般触摸屏都能响应的 x、y 坐标外,表面声波触摸屏的突出特点是它能感知第三轴（z 轴）坐标, 也就是能感知用户触摸压力的大小值,其原理是由接收信号衰减处的衰减 量计算得到。三轴一旦确定,控制器就把它们传给主机。
表面声波式触摸屏特点
表面声波触摸屏不受温度、湿度等环境因素影响，分辨率高，具有防刮性，寿命长( 维护良好情况下达 5000 万次) ，透光率和清晰度高,没有色彩失真和漂移, 安装后无需再进行校准，有好的防刮性，能承受粗暴的触摸，适合公共场所使用。 [但尘埃、水及污垢会严重影响其性能，需要经常维护，保持屏面的光洁。
电容式触摸屏
这种触摸屏是利用人体的电流感应进行工作的，在玻璃表面贴上一层透明的特殊金属导电物质，当有导电物体触碰时，就会改变触点的电容，从而可以探测出触摸的位置。但用戴手套的手或手持不导电的物体触摸时没有反应，这是因为增加了更为绝缘的介质。
电容触摸屏能很好地感应轻微及快速触摸、防刮擦、不怕尘埃、水及污垢影响，适合恶劣环境下使用。 [电容屏主要的缺点是漂移: 当环境温度、湿度改变, 环境电场发生改变时, 会引起电容式触摸屏的漂移, 造成不准确。
UN SQUARE D KCPVAC 125 Amp 3 Pole CIRCUIT BREAKER
UN SQUARE D KCFVAC 225 Amp 3 Pole CIRCUIT BREAKER
UN SQUARE D KCFVAC 125 Amp 3 Pole CIRCUIT BREAKER
UN SQUARE D KAL VAC 250 Amp 3 Pole CIRCUIT BREAKER w/ SHUNT AUX
UN SQUARE D KAL VAC 250 Amp 3 Pole CIRCUIT BREAKER w/ SHUNT TR
UN SQUARE D KALVAC 250 Amp 3 Pole CIRCUIT BREAKER
UN SQUARE D KAL0V 225A 3P CIRCUIT BREAKER w/ SHUNT TRIP, AUX
UN SQUARE D KABVAC 70 Amp 3 Pole CIRCUIT BREAKER
UN SQUARE D IFVAC 100 Amp 3 Pole CIRCUIT BREAKER
Type BP Class 9810 Square D Bolt-Loc Switch 1200A 480/277V
TVS4EMA16A SURGELOGIC SPD
TVS3EMA24A S Surge Suppressor
TVS2EMA24A SURGELOGIC SPD
TVS2EMA16A SURGELOGIC SPD
TVS2EBA12A Square D Transient Voltage Surge Suppressor 208/120V ( In Box)
Transformer: Schneider Sorgel with Mini Break: Electric Square D Power Dry II
TESTED 51 KVA Dry Type Transformer HV 460 Delta LV 460Y/266 Square D 51T145HDIT
TESTED 150 KVA Dry Type Transformer HV 480 Delta LV 208 Y / 120 150T3HB Watchdog
TELEMECHANIQUE SQUARE D ATS48D62YU 40 H.P. 460V SOFT START GOOD! (NN5)+
TELEMECANIQUE/SQUARE D ATV66U72N4 ADJ. SPEED DRIVE ConTROLLER ATV66U72N4
TELEMECANIQUE/SQUARE D ATS46C14N ATS-46C14N ALTISTART 46 SOFT START *TESTED*
TELEMECANIQUE ZB2BS54 RED EMERGENCY STOP PUSH BUTTON LOT 200 SQUARE D
Telemecanique XBTPM027110 Square D C1700, , XBTPM027110, Fast Shipping
Telemecanique Square D LC1F265 Coil Contactor Relay
TELEMECANIQUE SQUARE D LC1 F400
Telemecanique Square D Drive Altivar 58TRX 58 TRX ATV58HD23N4XZ 460v 3 phase
Telemecanique Square D Control Panel XBTF024610 _ XBTFO2461O _ XBT F024610
Telemecanique Square D ATV66D12N4 Altivar 66 Drive_VW3A66206 V 1.2 _ VX5A66D12N4
TELEMECANIQUE SQUARE D ALTIVAR 66 DYNAMIC BRAKE RESISTOR ASSEMBLY VW3A66716
Telemecanique Square D Altivar 66 Drive _ ATV66D12N4U _ VW3A6 6206 _ VX5A66D12N4
TELEMECANIQUE SQUARD D ALTISTART 46 SOFT START ATS46C17N 50-125HP
Telemecanique ATV58HD23N4Z Square D Altivar 58 400V 33A/27A *Fully Test*
Telemecanique ATV58HD16N4XZUS Square D AC Drive 480V 11kW/15HP * in Box*
Telemecanique Altivar 66 Square D, ATV66D12N4, 10HP, 460VAC, 3P, AC Drive
Telemecanique ALTISTART 46 ATS46D75N SOFT START Square D
SURPLUS Square D LC36400 3 Pole 400 Amp 600 Volt SqD Circuit Breaker
S-9998SL-26 3 Pole Contact Kit Size 6
S TRANSFORMER, EE45T3H, 45T3HFISCUNL, 45KVA, TYPE 2 ENCLOSURE
S Powerpact LG 600 breaker, 600Amp, 3 pole, LGL36600U31X
SquareD Power Measurement 7350 In Box
S PJA36060U44AE1 Circuit Breaker
S PJ800 PowerPact Circuit Breaker PJL3608U31F
S PJ800 PowerPact Circuit Breaker PJL3608U31E
S NX361200
S NEHB442ASP-N Powerlink AS Power Interface with AS42CM-T Control Module
S NA361200
S MJP36800 / MJL36800 / MGL36800
SquareD MJA36800 Type MJA-3Pole, 800Amps, 480/600Volts, I-Line BRAND
S MHL36700 MHL In Box 3P, 700A 480/600V Free Shipping
S ME36800LSG
S MAL36450 Circuit Breaker
S ISO FLEX MEDUIM VOLTAGE CONTROLLER
SquareD I-Line 3P Breaker Panel 250A 208/120V+box+cover
S HC panelboard
S H366AWK 600amp series E05 type 12 disconnect - 60 day warranty
S H366AWK 600amp Series E04 Single Throw Fusible
S Combination Starter, Model 8538-SDA21V02ASX11 3 Pole, Non-Reversing
S ALLSTART 46 - SOFT START ConTROLLER ATS46D62NV
SquareD 75T1771HISCUDIT 75 KVA 480 to 415Y/239V 3PH Transformer N1 Reconditioned
S * 800A SENSOR ELECTRonIC TRIP CIRCUIT BREAKER * MXP36800GMT
S # 400 AMP SERIES E1
S # NX361000 CIRCUIT BREAKER
S # LXLXAMP I-LINE BREAKER
S # JJA36250U33X
SQUARE MHP36800 MHL36800 3P 800 AMP 600V CIRCUIT BREAKER SURPLUS
SQUARE I-LINE II BUSWAY CAT# AP2308-G10 SER. 1. ALUM 800A, 3PH, 3W W/ INT. GRND
Square D8538SBW33V81ACFF4H30P42T1 Combination Motor Starter 30A 4/4X
Square D: 10S9FIS Dry Transformer. 1PH, 10KVA, 208V
Square D/Westinghouse DSL-416 1600A frame/1200A Sensor LIG Amptector I-A Breaker
Square D/Symax 8030-SCP-523A
Square D/Symax 8030-SCP-424
Square D/Symax 8030-SCP-423
Square D/Symax 8030-PS35
Square D/Symax 8030-DLM-120
Square D/Symax 8030-CRM-232
Square D/Schneider Electric LAL26250MB !! SEALED!!!!
SQUARE D,POWERLOGIC SEPAM SYNCHCHECK MODULE RELAY,SQ1S82P REDUCED 200 DOLLARS
Square D,MAL, 700 AMP 600 VOLT w/Auxillary Switch Circuit Breaker
SQUARE D, TRANSFORMER EE45T3H, 208 VAC WYE/120 VAC
Square D, SPXPCINTFV2, Schneider Seriplex ISA Bus CPU Interface Card
SQUARE D, SORGEL THREE PHASE GENERAL PURPOSE TRANSFORMER 75T3H
Square D, PJD36175GN, 2NZF7, I-Line Plug In Busway Unit, 3Ph 4Wire 175A 277/480V
Square D, Omegapak, AC Drive, Class 8803, Type P00CO4N
SQUARE D, NEMA SIZE 4, CLASS 8810, TYPE SFO 2, SERIES A, STARTER, 232584 BL
Square D, MHL36100031DC1286, 1000 AMP 500 VOLT DC- RECON W/TEST REPORT
Square D, MHL361000,1000 AMP,600 VOLT Circuit Breaker,RECON W/TEST REPORT
Square D, MAL36800, Circuit Breaker 800A Type S2 600V 3P
Square D, MAL36600, Circuit Breaker 600A Type S2 600V 3P
Square D, KHL36000M, Molded Case Switch Circuit Breaker 250A 3P
Square D, H362AWC, Heavy Duty Safety Switch 60A 3Pole Welding Welder Plug Pin Sl
SQUARE D, ENCLOSURE KIT, MH38, NQ442L2, NC38S, NIB
Square D, 8536SEG1V02CP1S, Motor Starter 8536SEG1CP1S Size 3 Enclosure
SQUARE D XR-IA-DI XRIADI
Square D XBTGT6330
SQUARE D XBT-F011310 MAGELIS OPERATOR INTERFACE XBTF011310 REPAIRED
Square D XBT F024610_XBTF024610_XBT FO2461O_XBTFO2461O with Memory Module PV:06
Square D XBT F024610_XBTF024610_XBT FO2461O_XBTFO2461O with Memory Module PV:02
Square D X-pole 800 amp 600v Circuit Breaker MHL36800 Replacement
Square D With Under Voltage And Auxiliary LHL36350 3p 350a 600v
SQUARE D WELD ConTROL MODULE
Square D Watchdog Sorgel Transformer Cat #75T3HF 75 KVA 480/208Y-120V ( )
Square D Watchdog Sorgel 75KVA Dry 3 Phase Transformer
Square D WATCHDOG 150 KVA Transformer 480 Delta 208Y/120 Volt ONE YEAR GUARANTEE
Square D Watch Dog 3-phase 112 KVA 480 208Y/120 cat no. EE112T3HBCU 7 taps Outdo
Square D VSD17U90N46 Enclosure Manual Drive IN BOX
SQUARE D VSD07-U29-M20 VSD07U29M20
SQUARE D VME BOARD /
Square D VCELSK3 **GENUINE** Schneider Telemecanique
SQUARE D VCEL-SK3 LUG KIT (FULL KIT) * IN BOX*
SQUARE D VCEL-SK3 LUG KIT (AS PICTURED-MISSING 3 LUGS) * IN BOX*
Square D variable frequency ac drive 20 hp Omegapak
SQUARE D VAR-GARD POWER FACTOR CAPACITOR PFC4060FR 60 KVAR 480 V ~
Square D USMounting base for Multi 9
Square D type T6 3P 400A 600V Single Saflex Series E1 , (D1L)
Square D Type Plug in Main Breaker
Square D Type PEL 1000 Amp rating Circuit Breaker 600 volt 3 pole
SQUARE D TYPE PE 1600 AMP GROUND FAULT CIRCUIT BREAKER.............ZF-301
Square D Type PAL 2000 Amp frame Circuit Breaker PAFvolt
Square D Type PA Circuit Breaker PAL PA-361600-F 3 pole max 1600 amps
Square D Type KDL32250 Circuit Breaker
Square D Type KA26250AC Circuit Breaker 2 Pole
Square D Type JGA36250 Circuit Breaker 3 Pole
SQUARE D TYPE 3R, 3S &12 ENCL. SER. E1 PANELBOARD W/ BREAKERS, BROKEN HANDLE
Square D TVS5IMA32OC Surge Protection Assembly, 320 kA per Phase! !
SQUARE D TVS4XGA24RID SURGE PROTECTIVE DEVICE
Square D TVS4XGA16A MA4XGA16 Sugrelogic Protective Device
Square D TVS4EMAAIC Surge Logic Protective Device NIB
Square D TVS4EMA48A1 Surge Protective Device
Square D TVS4EMA24AI Surge Protection, 240 kA, NEMA 3R, Counter,
Square D TVS4EMA24AC Surge Suppressor , Service Voltage: 480Y/277VAC, 200kA
SQUARE D TVS4EMA24AC SER. 002 SURGE PROTECTION DEVICE 480Y/277V 200KA 3 PHASE
SQUARE D TVS-4EMA16A TVS4EMA16A
Square D TVS4EBA24A1 Sq D Transient Voltage Surge Suppressor 240KA( In Box)
SQUARE D TVS4EBA24A SURGE PROTECTIVE DEVICE 480Y/277V T/O
SQUARE D TVS4EBA24A TVS4EBA24A
Square D TVS2XT12A **GENUINE** Schneider Telemecanique
Square D TVS2IMA12P Surgelogic MA1IMA12 Type NQOD NQOM Panelboard Main Breaker
SQUARE D TVS-2EMA12AISWT TVS2EMA12AISWT
SQUARE D TVS2EMA12AIC Transient Voltage Surge Suppressor 208Y/120V 3 Ph 4 wire
Square D TVS2EMA12A Transient Voltage Surge Suppressor
SQUARE D TVS2EMA12A SURGE PROTECTIVE DEVICE 120KA 208Y 120V 47-63HZ ***NIB***
SQUARE D TVS-2EMA12A TVS2EMA12A
SQUARE D TVS-2EBA16A TVS2EBA16A
Square D TVS2EBA16A MA2BA16 Surgelogic Protective Device
SQUARE D TVS2EBA12A TVS2EBA12A
SQUARE D TVS1EMA12AC TVSS, 240/120V 120KA Transient Voltage Surge Suppressor
Square D Transformer/Substation Single Phase 5kVA MPZ5S40F
SQUARE D TRANSFORMER, EE15T3H 480 V, 15 kVA
Square D Transformer, 75 KVA, HV 480, LV 480Y/277 - 75T76H
Square D Transformer Outdoor Nema 3R Raintight 3S1FIS 240/480-120/240
SQUARE D TRANSFORMER MPZ25S40F MPV MINI POWER ZONE KVA 25 HIGH VOLT 480
SQUARE D TRANSFORMER EE75T3H, 75KVA, HV 480, HV AMP 90, HZ 60, FLOOR MOUNT, 3 PH
Square D Transformer EE45T3HFISCU42DB 45KVA 3Ph Pri: 480V Sec: 208Y/120V Surplus
Square D Transformer EE15T3HISNLP 15KVA 3Ph Pri 480V Sec 208y/120V
Square D Transformer EE15T3H 15KVA 3Ph Pri 480V Sec 208y/120V
Square D Transformer Disconnect 9070SK1000A2D1G13
Square D Transformer Disconnect # 9070SK2000A3D1G13P1 No Box
SQUARE D TRANSFORMER 150 KVA PRI 480V SEC 208Y/120 3 PH DRY TYPE 150T3HBISNL
SQUARE D TRANSFORMER 150 KVA PRI 480V SEC 208Y/120 3 PH DRY TYPE 150T3H45DB
SQUARE D TRANSFORMER 112.5 KVA PRI 480V SEC 208Y/120 3PH DRY TYPE 112T3H
Square D Transformer - 112T76H
Square D Topaz Ultra Isolator 30 kVA Transformer Suppressor 3
Square D TOPAZ 800VR POWERMAKER **GENUINE** 81800VR
Square D TL8ATR33A9S Circuit Breaker, 600 Amp, 65 kAIR, NT08L1, Drawout,
Square D Temporary Distribution Panel 2