PILZ安全繼電器現貨PNOZ X1，德國PILZ繼電器，皮爾茲繼電器
并具有優勢價格。非常歡迎你和我公司。相信我們的一定能夠合作愉快。如果你愿意，我公司也真誠的歡迎你來我公司參觀考察，我公司將盡zui大的努力使你在上海之行倍感輕松愉快，有所收獲。同時，如果你公司方便，我公司也十分愿意到你公司和你面談，希望得到你公司的允許和協助：：     ，廖秀燕  ：
PILZ安全繼電器是由數個繼電器與電路組合而成，為的是要能互補彼此的異常缺陷，達到正確且低誤動作的繼電器完整功能，使其失誤和失效值愈低，安全因素則愈高，因此需設計出多種安全繼電器以保護不同等級機械，主要目標在保護暴露於不同等級之危險性的機械操作人員。  1
PILZ安全繼電器與一般繼電器的主要差別在哪里?　所謂“PILZ安全繼電器”并不是“*的繼電器”，而是發生故障時做出有規則的動作，它具有強制導向接點結構，萬一發生接點熔結現象時也能確保安全，這一點同一般繼電器*不同PILZ安全繼電器一般由鐵芯、線圈、銜鐵、觸點簧片等組成的。只要在線圈兩端加上一定的電壓，線圈中就會流過一定的電流，從而產生電磁效應，銜鐵就會在電磁力吸引的作用下克服返回彈簧的拉力吸向鐵芯，從而帶動銜鐵的動觸點與靜觸點（常開觸點）吸合。當線圈斷電后，電磁的吸力也隨之消失，銜鐵就會在彈簧的反作用力返回原來的位置，使動觸點與原來的靜觸點（常閉觸點）吸合。這樣吸合、釋放，從而達到了在電路中的導通、切斷的目的。對于繼電器的“常開、常閉”觸點，可以這樣來區分：繼電器線圈未通電時處于斷開狀態的靜觸點，稱為“常開觸點”；處于接通狀態的靜觸點稱為“常閉觸點”。
皮爾磁是的創新自動化技術公司。作為人身、機器和環境保護的安全專家，皮爾磁為各行各業提供以客戶為中心的解決方案。其中包括來自傳感器、控制和驅動技術領域的創新產品與綜合服務。  pilz
德國（pilz）皮爾茲公司自成立起已有50多年歷史，是世界上自動化領域的技術者和系統供應商。她于1968年發明了世界上*個雙手操作繼電器，被*為是安全控制領域中的一大創舉。1987年，皮爾茲又推出世界上*個急停繼電器PNOZ，皮爾茲的品牌也因此成為了安全繼電器的代名詞。 繼可編程安全系統PSS之后，皮爾茲公司于1997年憑借安全、開放總線系統SafetyBUS p 進入了安全技術的新領域。今天， 皮爾茲的產品適用于機械工程的任何領域，從傳統的自動化行業，如汽車制造業、食品加工業和木材加工業，到現代化的機場、劇院、纜車和游樂場。皮爾茲的產品不僅適用于標準的安全功能，如急停、安全門和雙手控制，同時能為各種應用提供合適的解決方案。
PILZ安全繼電器現貨PNOZ X1，德國PILZ繼電器，皮爾茲繼電器型如下：
PNOZ X1 24VAC/DC 3n/o 1n/c
PNOZ X2 24VAC/DC 2n/o
PNOZ X2C 24VAC/DC 2n/o
PNOZ X2.1C 24VAC/DC 2n/o
PNOZ X2.1 24VAC/DC 2n/o
PNOZ X3.2 230VAC 24VDC 3n/o 1n/c 1so
PNOZ X3 24VAC 24VDC 3n/o 1n/c 1so
PNOZ X3 42VAC 24VDC 3n/o 1n/c 1so
PNOZ X3 48VAC 24VDC 3n/o 1n/c 1so
PNOZ X3 110VAC 24VDC 3n/o 1n/c 1so
PNOZ X3 115VAC 24VDC 3n/o 1n/c 1so
PNOZ X3 120VAC 24VDC 3n/o 1n/c 1so
PNOZ X3 230VAC 24VDC 3n/o 1n/c 1so
PNOZ X3 240VAC 24VDC 3n/o 1n/c 1so
PNOZ X3.1 230VAC 24VDC 3n/o 1n/c 1so
PNOZ X3.1 240VAC 24VDC 3n/o 1n/c 1so
PNOZ X5J 24VDC 2n/o
PNOZ X5.1 24VDC 2n/o
PNOZ X5 24VACDC 2n/o
PNOZ X5 12VDC 2n/o
PNOZ X5 12VDC 2n/o coated version
P2HZ X1 24VAC 3n/o 1n/c
P2HZ X1 42VAC 3n/o 1n/c
P2HZ X1 48VAC 3n/o 1n/c
P2HZ X1 24VDC 3n/o 1n/c
P2HZ X1 26VDC 3n/o 1n/c
P2HZ X2 24VAC 2n/o
P2HZ X3 24VDC 2n/o 1n/c
P1HZ X1 24VDC 2n/o
PDZ 24VDC 2n/o 2n/c
PAD/BO 512/6/5VDC
PAD/SI 800/512I/5VDC
PAD/SI 800/1024I/5VDC
PAD/SI 800/2048I/5VDC
PAD/SI 800/4096I/5VDC
PAD/SI 840/512I/5VDC
PAD/SI 840/1024I/5VDC
PAD/SI 840/2048I/5VDC
PAD/SI 840/4096I/5VDC
PAD/SI 800/32I/5VDC
PAD/SI 840/256I/5VDC
PAD/SI 840/128I/5VDC
PAD/SI 840/64I/5VDC
PAD/SI 840/32I/5VDC
PAD/SI 840/16I/5VDC
PDZK WDP3-01 1000/20 24 Vdc
P2HZ X1 110VAC 3n/o 1n/c
P2HZ X1 115VAC 3n/o 1n/c
P2HZ X1 120VAC 3n/o 1n/c
P2HZ X1 230VAC 3n/o 1n/c
P2HZ X1 240VAC 3n/o 1n/c
PNOZ XV2 30/24VDC 2n/o 2n/o t
PNOZ XV2 3/24VDC 2n/o 2n/o t
PNOZ XV2 0.5/24VDC 2n/o 2n/o fix
PNOZ XV2 3/24VDC 2n/o 2n/o fix
PNOZ XV2 10/24VDC 2n/o 2n/o fix
PNOZ XV2 300/24VDC 2n/o 2n/o t
PNOZ XV2.1 30/24VAC 24VDC 2n/o 2n/o t
PNOZ XV2.1 30/120VAC 24VDC 2n/o 2n/o t
PNOZ XV2.1 30/230VAC 24VDC 2n/o 2n/o t
PNOZ X2.4V 1/24VDC 4n/o 1so fix
PNOZ XV2.1 3/24VAC 24VDC 2n/o 2n/o t
PNOZ XV2.1 3/115VAC 24VDC 2n/o 2n/o t
PNOZ XV2.1 3/120VAC 24VDC 2n/o 2n/o t
PNOZ XV2.1 3/230VAC 24VDC 2n/o 2n/o t
PNOZ XV3.1 30/24VDC 3n/o 1n/c 2n/o t
PNOZ XV3.1 3/24VDC 3n/o 1n/c 2n/o t
PNOZ XV3.1 0.5/24 Vdc 3n/o 1n/c 2n/o fix
PNOZ XV2.1 0.5/230 Vac 24 Vdc 2n/o 2n/o f
PNOZ XV3.1 300/24VDC 3n/o 1n/c 2n/o t
PNOZ XV3 30/24VDC 3n/o 2n/o t
PNOZ XV3 300/24VAC 3n/o 2n/o t
PNOZ XV3 3/24VDC 3n/o 2n/o t
PNOZ XV3 0.5/24VDC 3n/o 2n/o t fix
PNOZ XV3 3/24VDC 3n/o 2n/o t fix
PNOZ XV2.1 3/230 Vac/24 Vdc 2n/o 2n/o fix
PNOZ XV3 10/24VDC 3n/o 2n/o t fix
PNOZ XV3 300/24VDC 3n/o 2n/o t
PNOZ X13 24VDC 5n/o 1n/c
PNOZ XV2.1 30/24-240VACDC 2n/o 2n/o t
PNOZ XV2.1 3/24-240VACDC 2n/o 2n/o t
PNOZ XV2.1 0.5/24-240 VacDC 2n/o 2n/o fix
PNOZ XV2.1 300/24-240VACDC 2n/o 2n/o t
PNOZ XHCV 0,7/24VDC 2n/o fix
MOD PS 85-265 Vac
PPS 100-240VAC / 24VDC
PZE X4V 0,5/24VDC 4n/o fix
PZE X4V 1/24VDC 4n/o fix
PZE X4V 2/24VDC 4n/o fix
PZE X4V 3/24VDC 4n/o fix
PZE X4V8 24VDC 4n/o
PZE X4 24VDC 4n/o
PZE X4V 0,7/24VDC 4n/o fix
PZE X5V 3/48VDC 5n/o fix
PZE X5V 1.5/24VDC 5n/o fix
PZE X5V 3/24VDC 5n/o fix
PZE X5 24VDC 5n/o
PNOZ X9 42VAC 24VDC 7n/o 2n/c 2so
PNOZ X9 100-120VAC 24VDC 7n/o 2n/c 2so
PNOZ X9 200-230VAC 24VDC 7n/o 2n/c 2so
PNOZ X2.2 24VAC/DC 2n/o
PNOZ X9 200VAC 24VDC -774606
PNOZ X9 24VAC 24VDC 7n/o 2 n/c 2so
PNOZ XV3.1 30/24-240VACDC 3nc 2no t
PNOZ XV3.1 3/24-240VACDC 3nc 2no t
PNOZ XV3.1 300/24-240VACDC 3nc 2no t
END-XM
KOP-XE
KOP-XE coated
PCANdn 24VDC
CAN-CONNECT
PCANop - HB
PCANdn - HB
PNOZ X10 24VAC 6n/o 4n/c 3LED
PNOZ X10 42VAC 6n/o 4n/c 3LED
PNOZ X10 110-120VAC 6n/o 4n/c 3LED
PNOZ X10 230-240VAC 6n/o 4n/c 3LED
PNOZ X10 24VDC 6n/o 4n/c 3LED
PNOZ X6 42VAC 3n/o
PNOZ X6 110-120VAC 3n/o
PNOZ X6 230-240VAC 3n/o
PNOZ X6 24VAC 24VDC 3n/o
PNOZ X4 24VDC 3n/o 1n/c
PNOZ X4 24VAC 3n/o 1n/c
PNOZ X4 24 Vdc 3n/o 1n/c white box
PNOZ X4 110VAC 3n/o 1n/c
PNOZ X4 115VAC 3n/o 1n/c
PNOZ X4 120VAC 3n/o 1n/c
PNOZ X4 230VAC 3n/o 1n/c
PNOZ X4 240VAC 3n/o 1n/c
PNOZ X10.1 24 VAC 6n/o 4n/c 6LED
PNOZ X10.1 42 VAC 6n/o 4n/c 6LED
PNOZ X10.1 110-120VAC 6n/o 4n/c 6LED
PNOZ X10.1 230-240VAC 6n/o 4n/c 6LED
PNOZ X10.1 24VDC 6n/o 4n/c 6LED
PNOZ V 3s 24VDC  3n/o 1n/c 1n/o （t）
PNOZ V 30s 24VDC  3n/o 1n/c 1n/o （t）
PNOZ V 300s 24VDC  3n/o 1n/c 1n/o （t）
PU3Z 120-240VAC 3n/o 1n/c 6so
PU3Z 24VDC 3n/o 1n/c 6so
PNOZ 1 24VAC  3n/o 1n/c
PNOZ 1 48VAC  3n/o 1n/c
PNOZ 1 110-120VAC  3n/o 1n/c
PNOZ 1 230-240VAC  3n/o 1n/c
PNOZ 1 24VDC  3n/o 1n/c
BUCH MASCHINENSICHERHEIT
Buch Maschinensicherheit, spanisch
PNOZ X7P 110-120VAC 2n/o
PILZ安全繼電器現貨PNOZ X1，德國PILZ繼電器，皮爾茲繼電器型如下
PNOZ X7P 230-240VAC 2n/o
PNOZ X7P 24VAC/DC 2n/o
PNOZ 16SP 24VAC 24VDC 2n/o
PNOZ 16SP 42VAC 24VDC 2n/o
PNOZ 16SP 48VAC 24VDC 2n/o
PNOZ 16SP 110VAC 24VDC 2n/o
PNOZ 16SP 115VAC 24VDC 2n/o
PNOZ 16SP 120VAC 24VDC 2n/o
PNOZ 16SP 230VAC 24VDC 2n/o
PNOZ 16SP 240VAC 24VDC 2n/o
PNOZ X11P 24VAC 24VDC 7n/o 1n/c 2so
PNOZ X11P 110-120VAC 24VDC 7n/o 1n/c 2so
PNOZ X11P 230-240VAC 24VDC 7n/o 1n/c 2so
PNOZ X1P 24VDC 3n/o 1n/c
PZE 9P 24VACDC 8n/o 1n/c
PZE 9P 24VACDC 100-240VACDC 8n/o 1n/c
PZE X5P 24VDC 5n/o 2so
PNOZ X2.9P 24VDC 3n/o 1n/c
PNOZ X2.8P 24VACDC 3n/o 1n/c
PNOZ X2.8P 24-240VAC/DC 3n/o 1n/c
PNOZ X2P 24VACDC 2n/o
PNOZ X2.3P 24VACDC 3n/o
PNOZ X2.7P 24VACDC 3n/o 1n/c
PNOZ X2.7P 24-240VAC/DC 3n/o 1n/c
PNOZ X2P 48-240VACDC 2n/o
PNOZ X2.5P 24VDC 2n/o 1so
PNOZ X3P 24VDC 24VAC 3n/o 1n/c 1so
PNOZ X3P  24-240VACDC 3n/o 1n/c 1so
PNOZ X3.10P  24VACDC 3n/o 1n/c 1so
P2HZ X1P 24VAC 3n/o 1n/c 2so
P2HZ X1P 42VAC 3n/o 1n/c 2so
P2HZ X1P 48VAC 3n/o 1n/c 2so
P2HZ X1P 24VDC 3n/o 1n/c 2so
P2HZ X1.10P 24VDC 3n/o 1n/c 2so
P2HZ X4P 24VAC 3n/o 1n/c
P2HZ X4P 24VDC 3n/o 1n/c
P2HZ X1P 110VAC 3n/o 1n/c 2so
P2HZ X1P 115VAC 3n/o 1n/c 2so
P2HZ X1P 120VAC 3n/o 1n/c 2so
P2HZ X1P 230VAC 3n/o 1n/c 2so
P2HZ X1P 240VAC 3n/o 1n/c 2so
PNOZ XV2P 30/24VDC 2n/o 2n/o t
PNOZ XV2P 3/24VDC 2n/o 2n/o t
PNOZ XV2P 1/24VDC 2n/o 2n/o fix
PNOZ XV2P 0.5/24VDC 2n/o 2n/o fix
PNOZ XV3P 30/24 VDC 3n/o 2n/o t
PNOZ XV3.3P 30/24VDC 3n/o 2n/o t
PNOZ XV3P 3/24 VDC 3n/o 2n/o t
PNOZ XV3P 0.5/24VDC 3n/o 2n/o t fix
PNOZ XV3P 3/24 Vdc 3n/o 2n/o t fix
PNOZ XV3P 10/24 Vdc 3n/o 2n/o t fix
PNOZ XV3P 300/24VDC 3n/o 2n/o t
PNOZ XV3.1P 30/24VDC 3n/o 1n/c 2n/o t
PNOZ XV3.1P 3/24VDC 3n/o 1n/c 2n/o t
PNOZ XV3.1P 3/24VDC 3n/o 1n/c 2n/o t fix
PNOZ XV3.1P 30/24-240VACDC 3nc 2no t
PNOZ XV3.1P 3/24-240VACDC 3nc 2no t
PNOZ XV3.1P 300/24-240VACDC 3nc 2no
PNOZ XV2.1P 30/24-240VACDC 2n/o 2n/o t
PNOZ XV2.1P 3/24-240VACDC 2n/o 2n/o t
PNOZ XV2.1P 0.5/24-240 VacDC 2n/o 2n/o fi
PNOZ XV2.1P 3/24-240 VacDC 2n/o 2n/o fix
PNOZ XV2.1P 10/24-240 VacDC 2n/o 2n/o fix
PNOZ XV2.1P 300/24-240VACDC 2n/o 2n/o t
PZE X4VP 0,5/24VDC 4n/o fix
PZE X4VP 1/24VDC 4n/o fix
PZE X4VP 2/24VDC 4n/o fix
PZE X4VP 3/24VDC 4n/o fix
PZE X4VP8 24VDC 4n/o
PZE X4P 24VDC 4n/o
PZE X4VP4 24VDC 4n/o
PZE X4.1P 24VDC 4n/o
PZE X4.1P 24-240VAC/DC 4n/o
PNOZ X2.1VP 0.75/24VDC 1so  2n/o fix
PNOZ XV1P 3/24VDC 2n/o 1n/o t
PNOZ XV1P 30/24VDC 2n/o 1n/o t
PNOZ X9P 24VDC 100-240VACDC 7no 2nc 2so
PNOZ X9P 12VDC 7n/o 2n/c 2so
PNOZ X9P 24VDC 7n/o 2n/c 2so
PNOZ X10.11P 24VDC 6n/o 4n/c 6LED
PNOZ X8P 24 VDC 3n/o 2n/c 2so
PNOZ X8P 110VAC 3n/o 2n/c 2so
PNOZ X8P 115VAC 3n/o 2n/c 2so
PNOZ X8P 120VAC 3n/o 2n/c 2so
PNOZ X8P 230VAC 3n/o 2n/c 2so
PNOZ X8P 24VAC 3n/o 2n/c 2so
PSWZ X1P 0,5V /24-240VACDC 2n/o 1n/c 2so
PSWZ X1P 3V /24-240VACDC 2n/o 1n/c 2so
PSWZ X1P 0,0075-0,5V/24-240VACDC
PMUT X1P 24VDC 3n/o 1n/c 5so
PNOZ e1p C 24VDC 2so
PNOZ e1vp C 10/24VDC 1so 1so t
PNOZ e1vp C 300/24VDC 1so 1so t
PNOZ e1.1p C 24VDC 2so
PNOZ e2.2p C 24VDC 2so
PNOZ e2.1p C 24VDC 2so
PNOZ e3vp C 10/24VDC 1so 1so t
PNOZ e3vp C 300/24VDC 1so 1so t
PNOZ e3.1p C 24VDC 2so
PNOZ e4.1p C 24VDC 2so
PNOZ e4vp C 10/24VDC 1so 1so t
PNOZ e5.11p C 24VDC 2so
PNOZ e5.13p C 24VDC 2so
PNOZ e6.1p C 24VDC 4n/o 2so
PNOZ e6vp C 24VDC 4n/o 1so 1so t
PNOZ X7P C 110-120VAC 2n/o
PNOZ X7P C 230-240VAC 2n/o
PNOZ X7P C 24VAC/DC 2n/o
PNOZ 16SP C 24VAC 24VDC 2n/o
PNOZ 16SP C 42VAC 24VDC 2n/o
PNOZ 16SP C 48VAC 24VDC 2n/o
PNOZ 16SP C 110VAC 24VDC 2n/o
PNOZ 16SP C 115VAC 24VDC 2n/o
PNOZ 16SP C 120VAC 24VDC 2n/o
PNOZ 16SP C 230VAC 24VDC 2n/o
PNOZ 16SP C 240VAC 24VDC 2n/o
PNOZ X11P C 24VAC 24VDC 7n/o 1n/c 2so
PNOZ X11P C 110-120VAC 7n/o 1n/c 2so
PNOZ X11P C 230-240VAC 7n/o 1n/c 2so
PNOZ X1P C 24VDC 3n/o 1n/c
PZE 9P C 24VACDC 8n/o 1n/c
PZE 9P C 24VACDC 100-240VACDC 8n/o 1n/c
PZE X5P C 24VDC 5n/o 2so
DUMMY MODULE  PNOZ DM X2.7P/X2.8P C
DUMMY MODULE  PZE DM 9P C
DUMMY MODULE  PZE DM X4P C
DUMMY MODULE  PNOZ DM XV3.1P C
DUMMY MODULE  PZE DM X4VP C
PNOZ X2.9P C 24VDC 3n/o 1n/c
PNOZ X2.8P C 24VACDC 3n/o 1n/c
PNOZ X2.8P C 24-240VAC/DC 3n/o 1n/c
PNOZ X2P C 24VACDC 2n/o
PNOZ X2.3P C 24VACDC 3n/o
PNOZ X2.7P C 24VACDC 3n/o 1n/c
PNOZ X2.7P C 24-240VAC/DC 3n/o 1n/c
PNOZ X2P C 48-240VACDC 2n/o
PNOZ X2.5P C 24VDC 2n/o 1so
PNOZ X3P C 24VDC 24VAC 3n/o 1n/c 1so
PNOZ X3P C 24-240VACDC 3n/o 1n/c 1so
PNOZ X3.10P  C 24VACDC 3n/o 1n/c 1so
P2HZ X1P C 24VAC 3n/o 1n/c 2so
P2HZ X1P C 42VAC 3n/o 1n/c 2so
P2HZ X1P C 48VAC 3n/o 1n/c 2so
P2HZ X1P C 24VDC 3n/o 1n/c 2so
P2HZ X1.10P C 24VDC 3n/o 1n/c 2so
P2HZ X4P C 24VAC 3n/o 1n/c
P2HZ X4P C 24VDC 3n/o 1n/c
P2HZ X1P C 110VAC 3n/o 1n/c 2so
P2HZ X1P C 115VAC 3n/o 1n/c 2so
P2HZ X1P C 120VAC 3n/o 1n/c 2so
P2HZ X1P C 230VAC 3n/o 1n/c 2so
P2HZ X1P C 240VAC 3n/o 1n/c 2so
PNOZ XV2P C 30/24VDC 2n/o 2n/o t
PNOZ XV2P C 3/24VDC 2n/o 2n/o t
PNOZ XV2P C 1/24VDC 2n/o 2n/o fix
PNOZ XV2P C 0.5/24VDC 2n/o 2n/o fix
PNOZ XV3P C 30/24 VDC 3n/o 2n/o t
PNOZ XV3.3P C 30/24VDC 3n/o 2n/o t
PNOZ XV3P C 3/24 VDC 3n/o 2n/o t
PNOZ XV3P C 300/24VDC 3n/o 2n/o t
PNOZ XV3.1P C 30/24VDC 3n/o 1n/c 2n/o t
PNOZ XV3.1P C 3/24VDC 3n/o 1n/c 2n/o t
PNOZ XV3.1P C 30/24-240VACDC 3nc 2no
PNOZ XV3.1P C 3/24-240VACDC 3nc 2no
PNOZ XV3.1P C300/24-240VACDC 3nc 2no
PNOZ XV2.1P C 30/24-240VACDC 2n/o 2n/o t
PNOZ XV2.1P C 3/24-240VACDC 2n/o 2n/o t
PNOZ XV2.1P C 300/24-240VACDC 2n/o 2n/o
PZE X4VP C 0,5/24VDC 4n/o fix
PZE X4VP C 1/24VDC 4n/o fix
PZE X4VP C 2/24VDC 4n/o fix
PZE X4VP C 3/24VDC 4n/o fix
PZE X4VP8 C 24VDC 4n/o
PZE X4P C 24VDC 4n/o
PZE X4VP4 C 24VDC 4n/o
PZE X4.1P C 24VDC 4n/o
PZE X4.1P C 24-240VAC/DC 4n/o
PNOZ X2.1VP C 0.75/24VDC 1so  2n/o fix
PNOZ XV1P C 3/24VDC 2n/o 1n/o t
PNOZ XV1P C 30/24VDC 2n/o 1n/o t
PNOZ X9P C 24VDC 100-240VACDC 7no 2nc2so
PNOZ X9P C 24VDC 7n/o 2n/c 2so
PNOZ X10.11P C 24VDC 6n/o 4n/c 6LED
PNOZ X8P C 24 VDC 3n/o 2n/c 2so
PNOZ X8P C 110VAC 3n/o 2n/c 2so
PNOZ X8P C 115VAC 3n/o 2n/c 2so
PNOZ X8P C 120VAC 3n/o 2n/c 2so
PNOZ X8P C 230VAC 3n/o 2n/c 2so
PNOZ X8P C 24VAC 3n/o 2n/c 2so
PSWZ X1P C 0,5V/24-240VACDC 2n/o 1n/c2so
PSWZ X1P C 3V/24-240VACDC 2n/o 1n/c2so
PSWZ X1P C 0,0075-0,5V/24-240VACDC
PMUT X1P C 24VDC 3n/o 1n/c 5so
，德國PILZ繼電器，皮爾茲繼電器
：