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Use MERRYXMAS8 Code and Enjoy 8% OFF on Orders $99+ Valid Till 12/26
Use MERRYXMAS8 Code and Enjoy 8% OFF on Orders $99+ Valid Till 12/26

$500 and Above

$500 and Above – Premium Weather Instruments & Stations

Discover our top-tier weather gear in the “$500 and Above” collection — a curated selection of premium weather stations, high-precision instruments, and professional-grade tools built for serious enthusiasts, storm trackers, marine users, researchers, or anyone serious about monitoring the atmosphere.

These are not your average thermometers or rain gauges — here you’ll find sophisticated weather stations with multiple sensors, finely crafted analog instruments, durable wind & tide gauges, lightning detectors, high-altitude balloon kits, and more. Every item is chosen for accuracy, durability, and long-term reliability, from polished brass tide clocks and marine-grade barometers to wind meters capable of delivering detailed trend data.

Whether you’re upgrading a home weather setup, outfitting a marine vessel, building a standalone data-collection station, or giving a gift meant to last decades — this collection represents the best in weather instrumentation. Premium materials, precise mechanics or electronics, and comprehensive environmental sensing set these products apart as professional-class gear.

For those who demand real data, real performance, and real craftsmanship — the “$500 and Above” collection delivers.

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Weather Scientific Comet CO2 Concentration Transmitter with RS485 and two relay outputs Comet

Comet CO2 Concentration Transmitter with RS485 and two relay outputs

$636.00 - $636.00
$636.00
$636.00 - $636.00
$636.00
In stock

Comet CO2 concentration transmitter with RS485 and two relay outputs CO2 level transmitter with two output relays.Green LED shines - CO2 concentrat...

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$636.00 - $636.00
$636.00
$636.00 - $636.00
$636.00
Weather Scientific Comet WebSensor - remote CO2 concentration with Ethernet interface Comet
Weather Scientific Comet WebSensor - remote CO2 concentration with Ethernet interface Comet

Comet WebSensor - remote CO2 concentration with Ethernet interface

$557.00 - $557.00
$557.00
$557.00 - $557.00
$557.00
In stock

Comet WebSensor - remote CO2 concentration with Ethernet interface CO2 - carbon dioxide t-line Web sensor. Remote alarm.Web Sensor with built-in co...

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$557.00 - $557.00
$557.00
$557.00 - $557.00
$557.00
Weather Scientific Comet CO2 Concentration Transmitter with RS485 interface Comet

Comet CO2 Concentration Transmitter with RS485 interface

$536.00 - $536.00
$536.00
$536.00 - $536.00
$536.00
In stock

Comet CO2 concentration transmitter with RS485 interface CO2 - carbon dioxide level sensor.Green LED shines - CO2 concentration 0 to 1000 ppmYellow...

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$536.00 - $536.00
$536.00
$536.00 - $536.00
$536.00
Weather Scientific Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface, duct mount Comet
Weather Scientific Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface, duct mount Comet

Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface, duct mount

$812.00 - $812.00
$812.00
$812.00 - $812.00
$812.00
In stock

Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface, duct mount Duct mount CO2 concentration t-line WebSensor...

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$812.00 - $812.00
$812.00
$812.00 - $812.00
$812.00
Weather Scientific Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface Comet
Weather Scientific Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface Comet

Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface

$1,512.00 - $1,512.00
$1,512.00
$1,512.00 - $1,512.00
$1,512.00
In stock

Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface CO2 concentration, temperature and relative humidity t-li...

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$1,512.00 - $1,512.00
$1,512.00
$1,512.00 - $1,512.00
$1,512.00
Weather Scientific Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface Comet
Weather Scientific Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface Comet

Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface

$735.00 - $735.00
$735.00
$735.00 - $735.00
$735.00
In stock

Comet WebSensor - remote CO2 concentration thermometer hygrometer with Ethernet interface CO2 concentration, temperature and relative humidity t-li...

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$735.00 - $735.00
$735.00
$735.00 - $735.00
$735.00
Weather Scientific Comet Temperature, humidity, CO2 transmitter with two relay outputs Comet

Comet Temperature, humidity, CO2 transmitter with two relay outputs

$720.00 - $720.00
$720.00
$720.00 - $720.00
$720.00
In stock

Comet Temperature, humidity, CO2 transmitter with two relay outputs Temperature, humidity, CO2 level sensor with two output relays. TECHNICAL DATA ...

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$720.00 - $720.00
$720.00
$720.00 - $720.00
$720.00
Weather Scientific Comet Temperature, humidity, CO2 transmitter with two relay and RS485 outputs Comet

Comet Temperature, humidity, CO2 transmitter with two relay and RS485 outputs

$846.00 - $846.00
$846.00
$846.00 - $846.00
$846.00
In stock

Comet Temperature, humidity, CO2 transmitter with two relay and RS485 outputs Temperature, humidity, CO2 level sensor with two output relays.Green ...

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$846.00 - $846.00
$846.00
$846.00 - $846.00
$846.00
Weather Scientific Comet Temperature, humidity, CO2 transmitter with two relay and RS232 outputs Comet

Comet Temperature, humidity, CO2 transmitter with two relay and RS232 outputs

$756.00 - $756.00
$756.00
$756.00 - $756.00
$756.00
In stock

Comet Temperature, humidity, CO2 transmitter with two relay and RS232 outputs Temperature, humidity, CO2 level sensor with two output relays.Green ...

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$756.00 - $756.00
$756.00
$756.00 - $756.00
$756.00
Weather Scientific Comet Temperature, humidity, CO2 transmitter with RS485 interface Comet

Comet Temperature, humidity, CO2 transmitter with RS485 interface

$720.00 - $720.00
$720.00
$720.00 - $720.00
$720.00
In stock

Comet Temperature, humidity, CO2 transmitter with RS485 interface Temperature, humidity, CO2 level sensor. Outdoor, indoor use.Green LED shines - C...

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$720.00 - $720.00
$720.00
$720.00 - $720.00
$720.00
Weather Scientific Comet CO2 Concentration Transmitter with RS485 interface, external carbon dioxide probe, 1m cable Comet

Comet CO2 Concentration Transmitter with RS485 interface, external carbon dioxide probe, 1m cable

$1,281.00 - $1,281.00
$1,281.00
$1,281.00 - $1,281.00
$1,281.00
In stock

Comet CO2 concentration transmitter with RS485 interface, external carbon dioxide probe, 1m cable CO2 - carbon dioxide level sensor.The device is s...

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$1,281.00 - $1,281.00
$1,281.00
$1,281.00 - $1,281.00
$1,281.00
Weather Scientific Comet CO2 Concentration Transmitter with two relay outputs Comet

Comet CO2 Concentration Transmitter with two relay outputs

$1,271.00 - $1,271.00
$1,271.00
$1,271.00 - $1,271.00
$1,271.00
In stock

Comet CO2 concentration transmitter with two relay outputs CO2 level transmitter with two output relays.The device is supplied with CO2 probe with ...

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$1,271.00 - $1,271.00
$1,271.00
$1,271.00 - $1,271.00
$1,271.00
Weather Scientific Comet Temperature, humidity, CO2 transmitter with RS232 interface Comet

Comet Temperature, humidity, CO2 transmitter with RS232 interface

$599.00 - $599.00
$599.00
$599.00 - $599.00
$599.00
In stock

Comet Temperature, humidity, CO2 transmitter with RS232 interface Temperature, humidity, CO2 level sensor. Outdoor, indoor use.Green LED shines - C...

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$599.00 - $599.00
$599.00
$599.00 - $599.00
$599.00
Weather Scientific Comet Remote CO2 concentration with Ethernet interface and two relays Comet
Weather Scientific Comet Remote CO2 concentration with Ethernet interface and two relays Comet

Comet Remote CO2 concentration with Ethernet interface and two relays

$657.00 - $657.00
$657.00
$657.00 - $657.00
$657.00
In stock

Comet Remote CO2 concentration with Ethernet interface and two relays CO2 level transmitter with two output relays.The CO2 measurement is based on ...

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$657.00 - $657.00
$657.00
$657.00 - $657.00
$657.00
Weather Scientific Comet Remote CO2 concentration with Ethernet interface and two relays Comet
Weather Scientific Comet Remote CO2 concentration with Ethernet interface and two relays Comet

Comet Remote CO2 concentration with Ethernet interface and two relays

$1,423.00 - $1,423.00
$1,423.00
$1,423.00 - $1,423.00
$1,423.00
In stock

Comet Remote CO2 concentration with Ethernet interface and two relays CO2 level transmitter with two output relays.The CO2 measurement is based on ...

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$1,423.00 - $1,423.00
$1,423.00
$1,423.00 - $1,423.00
$1,423.00
Weather Scientific Comet Remote CO2 concentration thermometer hygrometer with Ethernet interface and two relays Comet
Weather Scientific Comet Remote CO2 concentration thermometer hygrometer with Ethernet interface and two relays Comet

Comet Remote CO2 concentration thermometer hygrometer with Ethernet interface and two relays

$867.00 - $867.00
$867.00
$867.00 - $867.00
$867.00
In stock

Comet Remote CO2 concentration thermometer hygrometer with Ethernet interface and two relays Temperature, humidity, CO2 level sensor with two outpu...

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$867.00 - $867.00
$867.00
$867.00 - $867.00
$867.00
Weather Scientific Comet CO2 External Probe, range 0-10.000ppm, ELKA connector, without cable Comet
Weather Scientific Comet CO2 External Probe, range 0-10.000ppm, ELKA connector, without cable Comet

Comet CO2 External Probe, range 0-10.000ppm, ELKA connector, without cable

$1,042.00 - $1,042.00
$1,042.00
$1,042.00 - $1,042.00
$1,042.00
In stock

Comet CO2 external probe, range 0-10.000ppm, ELKA connector, without cable CO2 concentration sensor for Datalogger U2422 or Multilogger M1440A mult...

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$1,042.00 - $1,042.00
$1,042.00
$1,042.00 - $1,042.00
$1,042.00
Weather Scientific Comet CO2 Concentration transmitter with two relay outputs Comet

Comet CO2 Concentration transmitter with two relay outputs

$546.00 - $546.00
$546.00
$546.00 - $546.00
$546.00
In stock

Comet CO2 concentration transmitter with two relay outputs CO2 level transmitter with two output relays.Green LED shines - CO2 concentration 0 to 1...

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$546.00 - $546.00
$546.00
$546.00 - $546.00
$546.00
Weather Scientific Comet WiFi temperature, relative humidity, CO2 and atmospheric pressure sensor with integrated probe Comet
Weather Scientific Comet WiFi temperature, relative humidity, CO2 and atmospheric pressure sensor with integrated probe Comet

Comet WiFi temperature, relative humidity, CO2 and atmospheric pressure sensor with integrated probe

$924.00 - $924.00
$924.00
$924.00 - $924.00
$924.00
In stock

Comet WiFi temperature, relative humidity, CO2 and atmospheric pressure sensor with integrated probe Sensors with WiFi interface are designed to me...

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$924.00 - $924.00
$924.00
$924.00 - $924.00
$924.00
Weather Scientific Comet WiFi CO2 sensor with integrated probe Comet
Weather Scientific Comet WiFi CO2 sensor with integrated probe Comet

Comet WiFi CO2 sensor with integrated probe

$788.00 - $788.00
$788.00
$788.00 - $788.00
$788.00
In stock

Comet WiFi CO2 sensor with integrated probe Sensors with WiFi interface are designed to measure the CO2 from integrated sensor (included in deliver...

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$788.00 - $788.00
$788.00
$788.00 - $788.00
$788.00
Weather Scientific Comet Temperature, humidity, CO2 and atmospheric pressure data logger with built-in sensors Comet
Weather Scientific Comet Temperature, humidity, CO2 and atmospheric pressure data logger with built-in sensors Comet

Comet Temperature, humidity, CO2 and atmospheric pressure data logger with built-in sensors

$693.00 - $693.00
$693.00
$693.00 - $693.00
$693.00
In stock

Comet Temperature, humidity, CO2 and atmospheric pressure data logger with built-in sensors Datalogger is designed to record temperature, humidity,...

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$693.00 - $693.00
$693.00
$693.00 - $693.00
$693.00
Weather Scientific Comet Temperature, humidity and CO2 data logger with built-in sensors Comet
Weather Scientific Comet Temperature, humidity and CO2 data logger with built-in sensors Comet

Comet Temperature, humidity and CO2 data logger with built-in sensors

$578.00 - $578.00
$578.00
$578.00 - $578.00
$578.00
In stock

Comet Temperature, humidity and CO2 data logger with built-in sensors Datalogger is designed to record temperature, humidity and CO2. In case of ex...

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$578.00 - $578.00
$578.00
$578.00 - $578.00
$578.00
Weather Scientific Comet IoT Wireless Temperature, Relative Humidity, CO2 and atmospheric pressure Datalogger with built-in GSM modem and Flat Rate SIM Card Comet
Weather Scientific Comet IoT Wireless Temperature, Relative Humidity, CO2 and atmospheric pressure Datalogger with built-in GSM modem and Flat Rate SIM Card Comet

Comet IoT Wireless Temperature, Relative Humidity, CO2 and atmospheric pressure Datalogger with built-in GSM modem and Flat Rate SIM Card

$1,253.00 - $1,253.00
$1,253.00
$1,253.00 - $1,253.00
$1,253.00
In stock

Comet IoT Wireless Temperature, Relative Humidity, CO2 and atmospheric pressure Datalogger with built-in GSM modem and Flat Rate SIM Card IoT Wirel...

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$1,253.00 - $1,253.00
$1,253.00
$1,253.00 - $1,253.00
$1,253.00
Weather Scientific Comet IoT Wireless Temperature, Relative Humidity, CO2 and atmospheric pressure Datalogger with built-in GSM modem Comet
Weather Scientific Comet IoT Wireless Temperature, Relative Humidity, CO2 and atmospheric pressure Datalogger with built-in GSM modem Comet

Comet IoT Wireless Temperature, Relative Humidity, CO2 and atmospheric pressure Datalogger with built-in GSM modem

$1,129.00 - $1,129.00
$1,129.00
$1,129.00 - $1,129.00
$1,129.00
In stock

Comet IoT Wireless Temperature, Relative Humidity, CO2 and atmospheric pressure Datalogger with built-in GSM modem GSM datalogger is designed to re...

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$1,129.00 - $1,129.00
$1,129.00
$1,129.00 - $1,129.00
$1,129.00