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    Capacitive, Magnetic and Piezo Switches

    Capacitive, Magnetic, and Piezo Switches are types of electronic switches that operate based on different principles. Let's explore each of them:

    1. Capacitive Switches: Capacitive switches use the principle of capacitance to detect touch or proximity. They typically have a touch-sensitive surface that acts as one plate of a capacitor, while the other plate is usually a ground plane or a separate electrode. When a conductive object, such as a finger, comes close to or touches the touch-sensitive surface, it changes the capacitance, which is then detected by the switch's electronics. Capacitive switches are commonly used in touchscreens, touch-sensitive buttons, and proximity sensors.
    2. Magnetic Switches: Magnetic switches, also known as magnetic reed switches, use the presence or absence of a magnetic field to control the switch's operation. They consist of two metal reeds that are hermetically sealed within a glass tube. Each reed contains magnetically sensitive material. When a magnetic field is applied near the switch, the reeds are attracted to each other, and the switch closes, allowing current to flow. When the magnetic field is removed, the reeds separate, and the switch opens. Magnetic switches are often used in applications such as security systems, door and window sensors, and proximity sensors.
    3. Piezo Switches: Piezo switches utilize the piezoelectric effect to convert mechanical stress or pressure into an electrical signal. They consist of a piezoelectric material, such as certain crystals or ceramics, that generates an electric charge when subjected to mechanical deformation. When pressure or force is applied to the switch, it causes the piezoelectric material to deform, generating an electrical signal. This signal can be used to trigger a switching action. Piezo switches are commonly found in applications where a robust and reliable switch is required, such as industrial control panels, medical equipment, and automotive applications.

    Each type of switch has its own advantages and limitations. Capacitive switches offer touch-sensitive and non-mechanical operation but may be affected by moisture or dirt. Magnetic switches are highly reliable and can operate in harsh environments but require the presence of a magnetic field. Piezo switches are durable and can withstand high forces, but they require mechanical pressure to operate and are typically more expensive.

    Capacitive Switches
    Capacitive Switches
    Hall Effect Switches
    Hall Effect Switches
    Piezo Switches
    Piezo Switches
    Reed Switch Magnets
    Reed Switch Magnets
    Reed Switches
    Reed Switches
    Thumbwheel Switches
    Thumbwheel Switches

    1052 Products showing for Capacitive, Magnetic and Piezo Switches

    1 of 53
    RS PRO Illuminated Piezo Switch, Momentary (NO), SPST, IP69, Flexible Wire, 200mA, -20 → +75°C Natural
    • RS Stock No. 259-1142
    Each
    HK$669.30
    Assemtech SPST Reed Switch, 3A 1000V ac/dc
    • RS Stock No. 362-2552
    • Mfr. Part No. 2202-1513-060
    Each
    HK$40.40
    DiodesZetex Hall Effect Switch 4mA 55mA Solder, Through Hole Open Drain, -40 → 150°C, 3 → 28 V
    • RS Stock No. 246-7394P
    • Mfr. Part No. AH3762Q-P-A
    Each (Supplied on a Reel)
    HK$4.978
    Assemtech SPST Reed Switch, 500mA
    • RS Stock No. 909-2581
    • Mfr. Part No. RI-03AA
    Each (In a Bag of 10)
    HK$6.96
    DiodesZetex Hall Effect Switch 4mA 60mA Solder, Through Hole Open Drain, -40 → 150°C, 3 → 28 V
    • RS Stock No. 246-7395
    • Mfr. Part No. AH3762Q-P-B
    Each (In a Pack of 10)
    HK$4.56
    RS PRO Illuminated Piezo Switch, Momentary (NO), SPST, IP69, Cable, 1A, -20 → +75°C Natural
    • RS Stock No. 259-1150
    Each
    HK$1,194.76
    Bulgin Capacitive Switch Latching NC,Illuminated, Green, Red, IP68, IP69K Stainless Steel
    • RS Stock No. 204-7873
    • Mfr. Part No. MC25LCSRG
    Each (In a Box of 60)
    HK$408.102
    Celduc Magnet for use with Magnetic Sensors
    • RS Stock No. 917-4854
    • Mfr. Part No. UR144360
    Each
    HK$50.00
    RS PRO SPCO Form A Through Hole Reed Switch, 500mA 170V
    • RS Stock No. 265-2235
    1 Box of 500
    HK$8,122.40
    Celduc 1 C/O Reed Switch, 250mA 100V dc
    • RS Stock No. 161-5760
    • Mfr. Part No. CG211525
    Each (In a Pack of 5)
    HK$48.60
    Sensata Cynergy3 SPST Reed Switch, 300mA 300V
    • RS Stock No. 229-3670
    • Mfr. Part No. TRA291G/20-30
    Each
    HK$24.70
    Assemtech Change Over Reed Switch, 1A
    • RS Stock No. 909-2837
    • Mfr. Part No. GC1625 (80-90AT)
    Each (In a Bag of 10)
    HK$93.657
    Otto IP68S Through Hole Thumbwheel Switch Thumbwheel
    • RS Stock No. 737-3762
    • Mfr. Part No. HTWM-1A12A22
    Each
    HK$800.90
    RS PRO Through Hole Reed Switch, 1.5A 300V
    • RS Stock No. 265-2277
    Each (In a Pack of 5)
    HK$29.63
    Banner Capacitive Switch Momentary NO, Solid State, IP66
    • RS Stock No. 331-375
    • Mfr. Part No. OTBA5LQD
    Each
    HK$1,359.91
    RS PRO 1C Through Hole Reed Switch, 500mA 175V
    • RS Stock No. 265-2248
    Each
    HK$29.00
    Littelfuse Reed Switch
    • RS Stock No. 905-8887
    • Mfr. Part No. MDCG-4-12-18
    Each (In a Bag of 5)
    HK$7.50
    RS PRO 1C Through Hole Reed Switch, 500mA 175V
    • RS Stock No. 265-2247
    1 Box of 500
    HK$12,955.90
    RS PRO IP67 SPST Cable Mount Reed Switch, 0.5A 100Vdc
    • RS Stock No. 268-4849
    Each
    HK$86.30
    Bulgin Capacitive Switch Momentary NC,Illuminated, Green, Red, IP68, IP69K Black Anodised
    • RS Stock No. 204-8181
    • Mfr. Part No. MC19MCBGR
    Each (In a Box of 60)
    HK$264.932
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