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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

    1074 Products showing for Capacitive, Magnetic and Piezo Switches

    1 of 54
    Assemtech SPST Reed Switch, 1A 230V ac/dc
    • RS Stock No. 362-2530
    • Mfr. Part No. 2502-2722-020
    Each
    $3.75
    Bulgin Capacitive Switch Momentary NO,Illuminated, Green, Red, IP68, IP69K Stainless Steel
    • RS Stock No. 208-8004
    • Mfr. Part No. MC25MOSGR
    Each
    $95.37
    Celduc Magnet for use with Magnetic Sensors
    • RS Stock No. 917-4854
    • Mfr. Part No. UR144360
    Each
    $10.72
    Bulgin Capacitive Switch Momentary NO,Illuminated, IP68 Black Anodised
    • RS Stock No. 208-8242
    • Mfr. Part No. MC22MOBRG
    Each
    $102.57
    Sensata Cynergy3 SPST Reed Switch, 1.3A 250V ac/dc
    • RS Stock No. 118-7035
    • Mfr. Part No. DRA200G/60-80
    Each
    $15.45
    Bulgin Illuminated Piezo Switch, Momentary, IP68, IP69K, Wire Lead, 1 A @ 24 V dc, -40 → +85°C Grey
    • RS Stock No. 124-1089
    • Mfr. Part No. MPZI022/F/GN/24
    Each
    $193.47
    Bulgin Illuminated Piezo Switch, Momentary, IP68, IP69K, Wire Lead, 1 A @ 24 V dc, -40 → +85°C Grey
    • RS Stock No. 124-1086
    • Mfr. Part No. MPZI022/F/RD/24
    Each
    $117.66
    Bulgin Capacitive Switch Latching NC,Illuminated, IP68 Red Anodised
    • RS Stock No. 208-8229
    • Mfr. Part No. MC22LCRGR
    Each
    $88.41
    Bulgin Capacitive Switch Momentary NO,Illuminated, Green, Red, IP68, IP69K Red Anodised
    • RS Stock No. 204-8081
    • Mfr. Part No. MC19MORRG
    Each (In a Box of 60)
    $60.398
    Bulgin Illuminated Piezo Switch, Momentary, IP68, IP69K, Wire Lead, 1 A @ 24 V dc, -40 → +85°C Grey
    • RS Stock No. 124-1087
    • Mfr. Part No. MPZI019/F/BL/24
    Each
    $172.54
    Bulgin Capacitive Switch Momentary NO,Illuminated, Green, Red, IP68, IP69K Black Anodised
    • RS Stock No. 208-8023
    • Mfr. Part No. MC25MOBRG
    Each
    $100.13
    Bulgin Illuminated Piezo Switch, Momentary, IP68, IP69K, Wire Lead, 1 A @ 24 V dc, -40 → +85°C Grey
    • RS Stock No. 124-1085
    • Mfr. Part No. MPZI022/F/D1/24
    Each
    $179.62
    Bulgin Capacitive Switch Momentary NO,Illuminated, IP68 Red Anodised
    • RS Stock No. 208-8228
    • Mfr. Part No. MC19MORRG
    Each
    $88.84
    Bulgin Capacitive Switch Momentary NO,Illuminated, Green, Red, IP68, IP69K Stainless Steel
    • RS Stock No. 204-8091
    • Mfr. Part No. MC22MOSGR
    Each (In a Box of 60)
    $60.64
    RS PRO Illuminated Piezo Switch, Momentary, IP68
    • RS Stock No. 175-9552
    1 Pack of 1
    $95.54
    Littelfuse Miniature Reed Switch
    • RS Stock No. 905-8878
    • Mfr. Part No. 59170-1-S-00-D
    Each (In a Bag of 5)
    $1.242
    RS PRO SPCO Form A Surface Mount Surface Mount Reed Switch, 300mA 30V
    • RS Stock No. 265-2270
    Each
    $10.28
    Bulgin Capacitive Switch Momentary NO,Illuminated, Green, Red, IP68, IP69K Stainless Steel
    • RS Stock No. 204-8167
    • Mfr. Part No. MC16MOSGR
    Each (In a Box of 60)
    $55.351
    Littelfuse Miniature Reed Switch
    • RS Stock No. 905-8869
    • Mfr. Part No. 59165-1-S-00-D
    Each (In a Bag of 5)
    $1.44
    Sensata Cynergy3 SPST Reed Switch, 1A 230V ac/dc
    • RS Stock No. 229-3658
    • Mfr. Part No. SRA200G/20-30
    Each
    $6.71
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