QH22L57YC

Current:	4.2 ~ 20mA
Features:	--
Ingress Protection:	IP67
Termination Style:	Wire Leads - 7.87" (200.00mm)
Viewing Angle:	--
Wavelength - Peak:	--
Millicandela Rating:	--
Lens Style/Size:	Ring with Domed Top, 55.00mm
Panel Cutout Dimensions:	0.866" (22.00mm)
Panel Cutout Shape:	Round
Series:	QH
Voltage:	12 V ~ 26.4 V
Ratings:	DC
Lens Transparency:	Diffused
Lens Color:	White
Lamp Color:	Yellow
Type:	LED
Lead Free Status / RoHS Status:	--
Part Status:	Active

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Panel Indicators, Pilot Lights: QH22L57YC Application Field and Working Principle

Panel indicators and pilot lights serve a dual purpose - they both indicate the status of a process or machine and help prevent accidents. Many devices are made to detect potential – pilot lights help operators quickly identify situations requiring corrective action, and alerting them to dangerous conditions. This article will focus on the QH22L57YC series, focusing on the application field and working principle.The QH22L57YC is an economical, reliable and flexible range of illuminated indicators, designed for a wide range of applications and environments. This type of panel indicator is used in a variety of industries, including building automation, medical, automotive, aerospace, security, military, and commercial electronics industries. It has a 60V AC/DC capacity and is UL/CSA approved. The QH22L57YC is durable, operating in temperatures from -40 to +80 degrees Celsius, with high moisture resistance. Each QH22L57YC panel indicator is composed of three main components – the panel, the controller, and the indicator. The panel is designed to fit into the desired working environment, with standardized cutouts for wiring, mounting, and components. The controller contains a switch or signal, which activates the indicator, usually an LED or incandescent lamp. Finally, the indicator is mounted on the panel and makes use of LEDs or incandescent lamps to indicate the status of a process or machine. When the switch or signal is activated, the controller recognizes the change in status and sends a signal to the indicator. Depending on the type of indicator device, this signal activates the LED or incandescent lamp and causes the indicator to light up. In some cases, to prevent false alarms, the indicators can be built to require multiple signals before activation. The QH22L57YC provides several safety features to ensure the safety of equipment and personnel. It supports automatic reset, overvoltage protection, and instantaneous trip on fail-safe tests. It also provides manual reset capability, additional circuit protection, and built-in surge suppression circuitry.Overall, the QH22L57YC is an economical, reliable, and flexible range of illuminated indicators, suitable for a wide range of applications and industries. It is rugged, designed for a broad temperature range, and provides several safety features to ensure the safety of personnel and equipment.

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Part Number	Manufacturer	Price	Quantity	Description