Is a reed switch. LJ3RG4024-3015EX LJ18A3-5-Z / BY PNP normally open 5mm LJ30A3-10-Z / BY DC24V YG-D70PK 24V E80-D40PK 24V LJ100A4-50-Z / B1Y DC24V E8-D15PKFG LJ12A3-4-Z / AX NPN ( NC) 200mA DC 6 ~ 30V LJ30A3-15-Z / CY LJ3RG4024-OJBOO LJ48A3-25-Z / EX LJIFL15-30L-10 / 01YC BEWS-515-5A-0 BEWS-515-5A-1 C110B-M30- D201X DC24V tier LJ18A3-8-J / E2 AC90-250V LJ30A3-10Z / EY 10-30V YHT3-D50L1 DC10-30V CJK-5C LJ3R4041-6KG01 WKG-4H-LED WKG-4D-LED LJ12A3-4-Z / EX DC10-36V in practical application LJ3RG4024-3015D, usually with a permanent magnet control the two metal pieces turned or not, it is also known as "magnetron." LM18-3005LA 6-36VDC NJK-5002C (8002C) 6-36DC / 3-wire / + pole connected load SKH-G-H25 / H AC220V SKH-G-K25 / H AC220V YD-B-AB15J1-JX / 12-36VDC / 300MA J4-D5C1 10-30VDC I: 200MASN: 5MM length 70MM Diameter: 18MM wire XHP-A50JK 20-250VAC / 2 line ERE-1515-10A-0 ERE-1515-10A-1 JC-D5PK NR-2P3X EYD60 -D8MP1 EYZ60-D15MP1 EIE-X18MEI LX-1022KB length 100mm full thread HED-KHF DC10-36V JG40L-Z20AH JG40L-Z20TK AC: 220V LA-M024PC LJ2GL-15-5 / 121 220V LJ2L - 15--5 / 121 220V LM18-3008LA 6-36VDC JK-G-H25 90-250AC 400MA LJ30A3-15Z / BX, Credible units, Shenyang Electric Co. on the people by the people of Shenyang. Shenyang Electric Co. on people (www.zsmsy.com) strong, credible, in other industries, such as Shenyang, Liaoning province has accumulated a large number of loyal customers. The company better work attitude and constantly improving people and innovative ideas will lead you to walk hand in hand on the Shenyang brilliant, for a better future!