Silicone Rubber Keypad & Keyboard, which is made from elastomeric translucent silicone rubber materials by compression molding, which is widely used in remote control unit, medical device, wireless communication device & equitment, telephone, safe box,  electronic calculator and other electronic products, as a reliable & stable switches components.
Silicone Rubber Keypad Design StructureÂ
1. Silicone Button & Key
2. Silicone Button Pads,Â
3. Button & Key flexible webbing
4. Button & Key Travel
5. Carbon Pills & Graphite Pads (Conductive Materials)
Silicone Keypads Surface Symbols & Icons
1. Screen Printing
2. Laser Etching (Legends for LED backlight)
3. Embossed & Debossed Molded Symbols
Silicone Keypads Surface Protection
1. Matte Smooth Coating
2. PU Coating
3. Epoxy Coating
4. Silicone Key with Plastic Button Cap
5. Silicone Key with Metal Button Cap
Notes:Â PU coating is more wearproof, and protective effects is better than matte smooth coating. However, PU coating is more expensive than matte smooth coating.
And also matte smooth coating have good tactile effect, PU coating is not too hard and not good tactile effect. Most silicone rubber keypads choose matte smooth coating.
Silicone Rubber Keypads Conductive Materials
1. Graphite Pads & Black Carbon Pills
2. Electrically Conductive Printing Ink
3. Metal Domes
4. Golden Pills & Copper Pads
5. Nickle Pills
Â
 | Life Time | Resistance | Diameter | Thickness | Advantage | Disavantage |
Carbon Pills | Above 10 Millions | 10-100 Ohms | 1.5-8 mm | 0.2-0.6 mm | Lower Resistance Stable Life Time |
Shape Limited |
Conductive Ink Printing | Above 10 Millions | 50-350 Ohms | Available | 10-20 Microns | Any Shape is Available | Resistance Limited |
Metal Domes | Above 10 Millions | 1-100 Ohms | Available | 0.05mm-0.1mm | Lower Resistance | Bad Tactile Feel Without Dust Free Functions |
Metal Pills | Above 10 Millions | 1-100 Ohms | Available | 0.05mm-2mm | Lower Resistance | Low Production Efficiency   High Unit Price |
Silicone Keypad Designers or Manufacturer Notes:
Silicone Keyboard Designers or Manufacturers, not only in consideration of actuation force and silicone rubber keypads structure like silicone buttons travels, keypad conductive materials, silicone rubber buttons webbing, but also should in view of silicone surface & materials demands, like symbols & icons, protective keyboard cover, silicone keypads materials choice &transparency, hardness, color spraying coating.
Xiamen Better Silicone Rubber Co.,Ltd is your reliable and professional keypads & keyboard manufacturer and suppliers. Silicone Rubber Keypads production technology and professional service is our advantage: Save your money and time.
Custom Keypad Drawing Information
Rubber/Plastic Conductive Silicone Button Pad Switch Keyboard
Silicone Rubber Keypad & Keyboard, which is made from elastomeric translucent silicone rubber materials by compression molding, which is widely used in remote control unit, medical device, wireless communication device & equitment, telephone, safe box,  electronic calculator and other electronic products, as a reliable & stable switches components.
Silicone Rubber Keypad Design StructureÂ
1. Silicone Button & Key
2. Silicone Button Pads,Â
3. Button & Key flexible webbing
4. Button & Key Travel
5. Carbon Pills & Graphite Pads (Conductive Materials)
Silicone Keypads Surface Symbols & Icons
1. Screen Printing
2. Laser Etching (Legends for LED backlight)
3. Embossed & Debossed Molded Symbols
Silicone Keypads Surface Protection
1. Matte Smooth Coating
2. PU Coating
3. Epoxy Coating
4. Silicone Key with Plastic Button Cap
5. Silicone Key with Metal Button Cap
Notes:Â PU coating is more wearproof, and protective effects is better than matte smooth coating. However, PU coating is more expensive than matte smooth coating.
And also matte smooth coating have good tactile effect, PU coating is not too hard and not good tactile effect. Most silicone rubber keypads choose matte smooth coating.
Silicone Rubber Keypads Conductive Materials
1. Graphite Pads & Black Carbon Pills
2. Electrically Conductive Printing Ink
3. Metal Domes
4. Golden Pills & Copper Pads
5. Nickle Pills
Â
 | Life Time | Resistance | Diameter | Thickness | Advantage | Disavantage |
Carbon Pills | Above 10 Millions | 10-100 Ohms | 1.5-8 mm | 0.2-0.6 mm | Lower Resistance Stable Life Time |
Shape Limited |
Conductive Ink Printing | Above 10 Millions | 50-350 Ohms | Available | 10-20 Microns | Any Shape is Available | Resistance Limited |
Metal Domes | Above 10 Millions | 1-100 Ohms | Available | 0.05mm-0.1mm | Lower Resistance | Bad Tactile Feel Without Dust Free Functions |
Metal Pills | Above 10 Millions | 1-100 Ohms | Available | 0.05mm-2mm | Lower Resistance | Low Production Efficiency   High Unit Price |
Silicone Keypad Designers or Manufacturer Notes:
Silicone Keyboard Designers or Manufacturers, not only in consideration of actuation force and silicone rubber keypads structure like silicone buttons travels, keypad conductive materials, silicone rubber buttons webbing, but also should in view of silicone surface & materials demands, like symbols & icons, protective keyboard cover, silicone keypads materials choice &transparency, hardness, color spraying coating.
Xiamen Better Silicone Rubber Co.,Ltd is your reliable and professional keypads & keyboard manufacturer and suppliers. Silicone Rubber Keypads production technology and professional service is our advantage: Save your money and time.
Custom Keypad Drawing Information
Portable Ultrasonic Flowmeter uses the principle of low voltage, multi-pulse time difference, the use of high-precision and ultra-stable double balance signal differential transmission, differential reception digital detection technology, when the ultrasonic beam propagates in the liquid, the flow of the liquid will make a small change in the propagation time, the change in the propagation time is proportional to the flow rate of the liquid.
At zero flow, the time required for the two sensors to transmit and receive sound waves is exactly the same (the only technology that can actually measure zero flow), and when the liquid flows, the transmission time of sound waves in the countercurrent direction is greater than that in the forward direction.
Portable Ultrasonic Flow Meter,Digital Ultrasonic Flowmeter,Hand Held Ultrasonic Flowmeter,Small Volume Portable Ultrasonic Flowmeter
Kaifeng Chuangxin Measurement & Control Instrument Co., Ltd. , https://www.kfcxflowmeter.com