Large Display

Easy to Use

Battery Power

PV Sensor

Small Size

Daystar DS-05A Solar Meter

Daystar's DS-05A solar meter brings 'point and read' simplicity to the measurement of solar irradiance. Just turn the meter on, point the sensor at the sun and obtain a reading in Watts/m2.

Buy with confidence! Daystar's meters are being used by satisfied customers throughout the USA and over 60 countries around the world.

Download a brochure here.

For small orders shipped within the United States via USPS Priority Mail, click on the links below. 

Buy 1 Now ($165.00 + free shipping)
Buy 2 Now ($300.00 + free shipping)
Buy 3 Now ($420.00 + free shipping)

Please see special ordering instructions for:
  • Discounts on larger quantities
  • Expedited shipping
  • Orders outside the United States

  • Features
    • Easy to use
    • Handheld
    • Accurate to +/-3%
    • Large, easy to read display
    • Compact Size
    • Battery powered
    Units of Measure
    Watts per meter squared (W/m2)
    0-1999 W/m2
    1 W/m2
    Polycrystalline silicon PV cell
    0.3-1.1 microns
    Display Type
    LCD, 0.75” (19 mm)tall
    2.5 x 4.5 x 1.0 inches (64 x 114 x 25 mm)
    ~ 5 ounces (140 g)
    Solar Meter FAQ

    PV Sensor: The DS-05A solar meter uses a polycrystalline silicon PV cell as the sensor. The cell is mounted on the top end of the meter, perpendicular to the display under a light diffusing lens.

    The sensor responds to a spectrum bandwidth of approximately 0.3-1.1 microns. The meter is intended for outdoor measurements of natural sunlight.

    Meter Calibration: Meters are calibrated on clear days in natural sunlight and adjusted to a reference cell periodically calibrated with pyranometers at Sandia National Laboratories.

    Meters are pointed directly at the sun for calibration. Off-angle calibration is not done. However, empirical data indicate meter-to-meter performance remains consistent up to 40 degrees off-angle from the direct normal. Beyond 40 degrees the readings start to diverge and may reach 10 - 15% when pointed 70-80 degrees away from the sun. The meters are calibrated in groups and records for individual meters are not maintained.

    Care of your Meter: The meters are designed for use in the field but you should treat them as you would your voltmeter; avoid dropping them, do not leave them out in the rain. They are not sealed for continuous exposure to weather. The LCD display may darken if exposed to direct sunlight for a prolonged period.

    Meter Repair: If your meter is damaged or malfunctions, email Raydec for instructions about repair or return. A repair charge may assessed if your meter is more than one year old.

    Using Your Meter: The Daystar solar meter measures instantaneous solar irradiance and provides the reading in Watts per square meter (Watts/m2).

    You can calculate the total power striking a PV array or module by taking the area of the active PV material and multiplying by the reading from the meter. You can estimate the output power from the PV array for that condition by multiplying by the advertised module efficiency.

    You would have to adjust that value for losses, temperature effects, inverter efficiency, etc., to obtain the actual system output. For more see Using the Daystar Solar Meter.

    Solar Meter Downloads
    Solar Meter Ordering

    Price List

    Price Each
    Buy 1 Now for $165 total
    Buy 2 Now for $300.00 total
    Buy 3 Now for $420.00 total

    Free standard shipping within USA on all orders!

    * For larger quantities, expedited shipping, or orders shipping outside the United States, please contact us at

    Please provide the quantity, your shipping address and any special shipping instructions.
    DO NOT send credit or other payment information. We will email an invoice with payment options. Your order will not ship until you complete the payment process.

    Please Note:
    For expedited shipping, we will do our best to ship the same day when possible. Otherwise, expedited shipments will go out the next business day.

    For international orders or expedited shipping, we will calculate the shipping cost and add this to the total amount charged.


    Raydec, Inc.

    10255 Corona Ave. NE
    Albuquerque, NM 87122
    (505) 292-5002

    Home    IV Tracer    Multi-Tracer    Solar Meter    About

    © Copyright 2022 Raydec, Inc.. All Rights Reserved.