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PUSHBUTTON
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R 2007/01 INDICATOR
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LA42(B)
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TContents
Type-specification 01 Brief Introduction
Standard Button
01 Using range
Illuminated Button
Knob Switch
02 Structure Characteristics
Key-lock Switch
02 LED Performance Characteristics Buzzer
Mushroom Head Button
03 Technical Parameter
Indicator
Emergency-stop Button 03 Contact Capability
Accessories
04 Type and meaning Outline Dimensions & Installation Drawing
Brief Introduction of Products
LA42(B) series ø 16 button is another new series of products pushed out by Shanghai Tianyi
Electric Co. Ltd. following the LA42(B) series ø 22 button.
LA42(B) series button is complete in specifications. This series of products can be divided into
round , square and rectangular according to the appearance, and can be divided into standard
button, illuminated button, knob switch, emergency-stop button, buzzer, indicator and so on.
LA42(B) series button can meet users’ requirement of panel miniaturization and intensifying
control to the greatest extent.
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Using range
LA42 (B) series button are suitable, as control signal interlock, for the electric control circuits of
NC Machine Tools, Machines, Electric Power, Telecommunication, Automation Equipment and
Instrument Etc. Of Ac 50hz (Or 60 Hz) voltage to AC 600V and DC 400V.Structure Characteristics
1. The structure is convenient to Ø16
mount and dismount. 9mm
22mm
2. The light-force style instant-on
switch offers small operating force
and reliable on-off.
3. Stop locations offer accurate 4. The helmets of LA42(B) series button are divided
allocation and no loosing. into 3 kinds of shapes. That’s is round,quadrate and
rectangular, all of which can be combined installed
on control panel. It can be installed maximum-
intensive to meet the needs of panel miniaturization
and intensifying installing.
LED Performance Characteristics
Shanghai Tianyi Electric Co. Ltd. uses new-type super- bright LED created by themselves for the
LA42(B) series illuminated button and indicator. There is a reflective gasket, which is used to remove
the light radiation; the nameplate is used as a filter to transmit the optical source effectively and keep
the illuminated area clear and transparent. All kinds of symbols can be printed on the nameplate.
Working voltage 6V 12V 24V 110V 220V
Allowable voltage pulsation ± 5% ± 5% ± 10% ± 20% ± 20%
Optical source LED LED LED NE(Neon light) NE(Neon light)
Color R, G, Y, W, S, R, G, Y, W, S, R, G, Y, W, S, R,G R,G
Working current 20mA 15mA 13mA 1.4mA 0.8mA
Working life 30,000 h 30,000 h 30,000 h 3,000 h 3,000 h
2Technical Parameter
Working temperature J25(cid:2)H55(cid:2)(no freezing)
Working humidity 45~85%RH(no condensation)
Contact resistance (cid:2)0.05(cid:2) (initial value)
Insulation resistance (cid:2)100=j(cid:2)

Title: φ16(B) Push Button & Indicator (English Version) Description: The φ16(B) Push Button & Indicator refers to a specific type of electrical component commonly used in the industrial automation and control systems. Here, "φ16" indicates that the button or switch has an outer diameter of 16 millimeters, which is typically measured in accordance with ISO metric standards for push buttons. The letter "B" could refer to various things such as button style (e.g., flat, mushroom, or toggle), button function (momentary or maintained action), or a series code within a particular manufacturer's product line. The "Push Button" part is a mechanical device that, when pressed, sends an electrical signal to the control circuit, usually for switching on/off, activating a process, or providing input to a PLC (Programmable Logic Controller) or other electronic devices. It serves as a user interface for manual operation and control. The "Indicator" mentioned likely refers to an illuminated display element adjacent to or integrated with the push button, which provides visual feedback to indicate the status of the system or the button itself - whether it's in the resting position (off) or activated (on). This might include LED lights, LCD displays, or any other form of illumination that communicates the operational state clearly to the operator. In summary, the φ16(B) Push Button & Indicator is a standard-sized button paired with a status indicator designed for ease of use and clear indication in electrical and automation applications.