The THWD-3 uses a precision capacitance sensor to deliver accurate performance with long term stability. This high accuracy instrument measures the full range of relative humidity from 0% to 100% and features an exceptionally wide ambient temperature measurement range. The sensor is mounted on a long shaft extending from the top surface of the unit, making probing into ductwork and hard to reach areas more easy. The large LCD displays two measurements simultaneously with a full range of display options including hold, min, max, Dew Point (DP) and Wet Bulb (WB). The THWD-3 comes with soft carrying case, sensor cover, battery and manual.

• Humidity measurement
• Temperature measurement
• Dew point measurement
• Measurement of wet bulb temperature
• Probe integrated in device
• Integrated measurement memory (data hold)
• Min and max data hold
• Auto power–off

This therma-hygrometer from ETI has been manufactured to a high standard and is the ideal instrument for achieving maximum accuracy and repeatability of a temperature reading.

The hygrometer displays both humidity and temperature in addition to indicating and recording maximum and minimum readings. There is also an analogue arrow indicator and a colour-coded bar to display either humidity comfort levels (dry, comfort and wet) or temperature comfort levels (cold, comfort and hot). Such features make this instrument ideal for monitoring both temperature and humidity in rooms, offices and factories to ensure optimum environmental conditions are maintained.The unit is powered by 2 x 1.5V AAA batteries (not supplied) and comes housed in an ABS case, incorporating a useful foldaway stand and keyhole slot for hanging on a wall.

• Displays both humidity and temperature (10 to 99% RH/0 to 50 °C)
• Max/min memory function
• With comfort level indicator
• 20 x 100 x 110mm
• 150g
• Battery life: 10,000 hours
• UK manufacturer
• 2-year manufacturer's guarantee
• Manufacturer's part ETI 810-135

Buy ETI Digital Thermo-Hygrometer – a low-cost digital thermo-hygrometer equipped with an easy to read dual display, simultaneously indicating both temperature and humidity.

• Easy to read dual display, simultaneously indicating both temperature and humidity
• Compact and attractively designed unit
• Indicates and records maximum and minimum readings of both temperature and humidity
• Max./min. memory
• High/low alarm
• Powered by single AAA alkaline battery, for suitable replacement see Batteries section

Damage resulting from high humidity and poor ventilation in storage rooms, offices, and houses not only costs money to repair, but is also unhealthy and unsightly. Most people think that the dampness comes from outside, but that is often not true. In reality, moisture is caused inside the house by evaporation in the kitchen and bathroom. The use of highly insulating building materials greatly reduces ventilation which means that active ventilation is now a necessity. It is therefore important to check the indoor climate in order to ensure a healthy living environment.

The Extech 445815 Humidity Alert II Hygro-Thermometer alarms you when the %RH exceeds a pre-set HI or LO limit. The remote probe conveniently mounts on the meter or extends for measurements in ducts or remote locations. It also features Humidity and Temperature adjustments. The unit can be wall-mounted or placed on a flat surface using the fold-out stand. This professional meter, with proper care, will provide years of safe reliable service.

• Humidity Indicator with Dew Point and Programmable Hi/Lo %RH Alarms
• External sensor
• Large display
• Very high accuracy
• Extremely fast humidity sensor
• Max. /min.- Memory
• Wall mounting or table installation is possible

The Fluke 971 measures temperature, dew point or wet bulb from -20°C to 60°C and measures relative humidity from 5 percent to 95 percent, ±2.5 percent RH. Its 99-point data storage capacity means users can take multiple readings and store them for later analysis. The Fluke 971 Temperature Humidity Meter features a liquid crystal display with backlight and a low battery indicator. The unit operates on four AAA alkaline batteries. Temperature and humidity are key variables in determining the performance of HVAC systems and the comfort of building occupants. In addition, the accumulation of moisture can generate high humidity levels that foster the growth of bacteria and mould, which in turn can cause health problems, financial liability and costly remediation challenges. With its pocket-size convenience and durability, the Fluke 971 gives HVAC technicians and building managers an accurate, simple tool to ensure HVAC systems are operating within specification. Industrial hygienists will find it useful for identifying conditions that encourage biological growth, and verifying that measures to control humidity are working. Regulation of humidity and temperature can help keep employees comfortable and productive, and protect them from health issues that may arise when humidity is not carefully controlled.

• Simultaneously measures humidity and temperature
• Measures dew point and wet bulb
• 99 record storage capacity
• Min/max/avg data hold
• Ergonomic design with built-in belt clip
• Backlit, dual readings display
• Twist-open protective cap
• Low battery indicator

Please Note: On page 1 of the manual, it states the following:

To extend sensor life, keep the sensor's protective shutter closed whenever the meter is not in use.

Unfortunately this is a misprint in the product brochure, the feature of the protective shutter is not available on the UK models but only on the models in the USA.

The Greisinger GFTB 200 is a Precision Hygrometer/Thermometer/Barometer that measures the absolute air pressure, relative humidity, temperature and further derived units in ambient air. The air and temperature measurement is done by precision sensors in the probe tube within seconds and informs you, whether the values are in the green, with or without alarm just as desired. This allows putting the device aside and engaging in more essential things than damage due to moisture and mould formation.

The integrated interface together with the software EBS 20M (optional) allows the device to serve as mobile weather station with long-term recording. The air conditions can be displayed both precise and clear by the additional measuring variables like wet-bulb temperature, absolute humidity and humidity content of air.

Applications: Mobile Weather Station, Housing Space, Indoor Swimming Pools, Offices and Production Rooms, Laboratories, Storage Rooms, Museums, Gallery, Churches, Climate Technology and Construction.

What's in the Box?Greisinger GFTB 2009V batteryOperating manual

• Air humidity, temperature and air pressure measurement
• Additional display for further parameters, e.g. dew point
• Temperature and absolute humidity
• Alarm function with integrated buzzer
• Min/max value memory
• Very low power consumption (>6500 operating hours)
• PC interface
• Manufacturer's part: Greisinger GFTB 200

The Testo 610 thermohygrometer enables fast, precise measurement of temperature and humidity in indoor areas, for example in offices, warehouses, production facilities or server rooms. This user-friendly measuring instrument can calculate the dew point and wet bulb temperature for you. Both values enable conclusions to be drawn about the relationship between temperature and humidity and are important factors in terms of assessing the indoor climate.

The current temperature and humidity values are easily legible on the illuminated display. In addition, it can display the calculated dew point and wet bulb temperature, as well as min./max. values.

With its clip-on protective cap, wrist strap and belt pouch, the handy thermohygrometer can be safely stored and easily taken along to any measuring location.

• Measures both surface and air temperature at the same time
• Laser spot marking
• Measurement range -30°C to 300°C
• Accuracy ±1 digit: ±2.0°C (-30 to +100°C) and ±2 of mv (remaining range) (infrared)
• Hold/MAX/MIN functions
• Settable emissivity
• Bright LCD screen
• Manufacturer's part: 0560 0610

The Testo 622 thermo hygrometer and barometer is ideal for monitoring the ambient air. It measures the air temperature, relative humidity and the air pressure at a rate of once every ten seconds and displays the values including the time and date on the large easy-to-read display.

A visual LED alarm alerts the room's occupants when a threshold has been exceeded. This meter allows you to keep an eye on ambient air values, especially in laboratories during calibration or when running experimental set-ups.

What's in the box?

Thermohygrometer and barometer, Certificate of Conformity, wall and table mount, 4 x AA batteries.

• Temperature sensor measuring range: -10 to +60°C
• Humidity sensor measuring range: 0 to 100 %RH
• Absolute pressure measuring range: 300 to 1200mbar
• Storage temperature: -20 to +60°C
• Weight: 240g (without batteries)
• Dimensions: 185 x 105 x 36mm
• Operating temperature: -10 to +60°C
• Measuring rate: 10 sec
• Housing: ABS
• Protection class: IP30 EU-/EG-guidelines: 2004/108/EG
• Warranty: 24 months
• Battery type: 4 x AA
• Battery life: 12 months
• Manufacturer's part: 0560 6220

This compact thermohygrometer from Testo has a connectable humidity sensor which measures the air temperature and relative humidity. It can also calculate the dew point and wet bulb temperature.The meter is equipped with a large, easy-to-read, backlit display, a hold function which allows you to freeze the last reading and min and max readings that can be displayed at the touch of a key.

It is ideal for monitoring production and storage conditions to ensure the quality of products and for ensuring the right climate in archives and libraries and is excellent for detecting mould or locating places which are at risk in buildings. This instrument can also ensure that the right indoor climate is maintained in greenhouses and in the workplace.

What's in the Box?ThermohygrometerConnectable humidity sensor headBatteryCertificate of Conformity

• Auto shutdown feature
• ABS housing
• Battery 1 x 9V PP3 (supplied)
• Battery life 70 hours
• 2 year guaranteed long-term stability
• Manufacturer's part: 0563 6251

This high precision thermohygrometer from Testo is perfect for carrying out a variety of measurements. A wide selection of optionally available sensors and probes can be connected to the meter to measure the following: Relative humidity, material moisture, material compensation moisture, pressure dew point in compressed air systems, HTC value, air temperature, surface temperature, core temperature and absolute pressure.

There are two sensor inputs for probes and up to 3 further temperature sensors can be connected via wireless signal using an optional plug-in module (not supplied). In addition to the other measurements, the 635-2 temperature and moisture meter can display min, max and mean values and calculate the dew point difference between the indoor air and the surface of the wall. This allows you to analyse levels of moisture at ceilings and walls. Individually configured characteristic curves ensure the material moisture content is displayed reliably.

What's in the Box?ThermohygrometerPC software and USB cableBatteryCertificate of Conformity

• Storage temperature: -30 to +70°C
• Weight: 428 g
• Dimensions: 220 x 74 x 46mm
• Operating temperature: -20 to +50 °C
• Warranty: 2 years
• Battery type: Alkaline AA
• Battery life: 200 hrs
• Manufacturer's part: 0563 6352

This analogue thermometer/hygrometer from TFA has been designed to show both temperature and humidity at a glance. Contrary to the spiral hygrometer - which shows the correct value only at one point in the scale - the hair-synthetic hygrometer can be adjusted because of its design in such a way that it reliably shows the entire scale.

• Hair-synthetic hygrometer
• Incl. 40 mm thermometer
• For indoor use
• Wall mounting, Ø 102 x 35 x 113mm
• Weight: 65g
• Case with brass ring
• Manufacturer's part 45.2007

This digital thermometer/hygrometer from TFA has been designed for the control of interior temperature and humidity of air for a clean environment. Manufactured with an ultra-flat design, comfort level, max.min.-function and high-gloss surface.

Readings include: Temperature indoor: 0 to +50°C (+32 to +122°F)Humidity indoor: 20 to 95%

• Station power supply: CR 2025 button cell (not included)
• Transfer type: direct
• Wall mounting or table standing
• Colour: black
• Dimensions: 100 x 12 (48) x 82mm
• Weight: 70g
• Manufacturer's part 30.5027.01

This mini digital thermometer/hygrometer from TFA is very compact, measuring internal temperature and humidity. The device has an LCD display and can either be wall mounted or used as a table device.

• Min/max function
• Compact
• Reading range - indoor temperature: -10 to +60 °C
• Indoor humidity: 10 to 99%
• Resolution indoor humidity: 1%
• Operating voltage: 1.5V DC (1x LR44 button cell, included)
• Colour: White
• Hub dimensions: 53 x 39 x 15mm
• Weight: 30g
• Manufacturer's part 30.5005

The Voltcraft digital thermo/hygrometer HY-10 TH allows quick and easy ambient air control measurements and displays the temperature and relative humidity readings on a clearly arranged display. The min. and max. values for humidity and temperature are stored and can be recalled at any time.

The light and handy design makes the meter easy to transport - even in the pocket.

• Measuring range -10 to +60°C / 0 to 100% rh
• Min/max value display
• Switchable temperature measuring unit (°C/°F)
• Hold function
• Optional display illumination
• Auto power off function (can be disabled)
• Battery change indicator
• Supplied complete with 3x AAA batteries and operating instructions
• Voltcraft type HY-10 TH

This Voltcraft MF-100 non-invasive digital moisture meter is ideal for measuring moisture content in concrete, wood and other building materials. This helps to check if the surface is ready for painting or covering. In fact, the device is suitable for all kinds of building materials. Large surface areas can also be quickly and effectively measured by using the alert function.

The user can concentrate on the measured object without having to constantly read the measurement values on the display. The device will produce a beeping noise if the moisture level exceeds the threshold value.

This device features a wide measuring range, with a penetration depth of about 20mm to 40mm. It has min / max display and a low battery indicator. Additionally, the equipment possesses a Hold function for the brief storage of the measurement. The device is powered by three AAA batteries.

• Adjustable MIN-/MAX function with acoustic alarm
• Material surface humidity
• Acoustic alarm
• Robust housing with soft rubber protection
• Display of moisture index
• Hold function
• Supplied with MF-Moisture meter, 3x AAA batteries and operating instructions

Too high a humidity level in homes can cause not only millions worth of damage but is also unhealthy. In addition, the damage looks unsightly. Most people think that the dampness comes from outside, but that is often not true. In reality, moisture is caused inside the house by evaporation in the kitchen and bathroom. The use of high heat-retention building materials greatly reduces air circulation through walls, which can only be corrected by positive ventilation. It is therefore important to check the indoor climate in order to ensure a healthy living environment. The MS-10 indicates whether the indoor environment is too dry or too damp, and through targeted airing or heating you are able to arrive at the right living environment.Simple operation · High accuracy · Extremely rapid measurement (important for ventilation) · Max./Min.Memory · Dew point display · Alert if the humidity exceeds 65% RH

• Room temperature
• Indoor relative air humidity
• Maximum and minimum values
• Dew point
• Acoustic and optical alarm function in case of risk of mould

The Voltcraft PL-100TRH thermo-hygrometer is a compact handheld meter for measuring air temperature and relative humidity. Both readings are shown simultaneously on the display. With the included K-type temperature sensor both indoor climate controls and material controls can be checked and verified. It has MIN./MAX. and HOLD functions as well as the option to switch between fahrenheit and centigrade. It has a built in NTC temperature sensor and a socket for a K-type temperature sensor and can display Dew point, wet-bulb and dry-bulb temperatures in °C or °F. If a type-K sensor is fitted the meter can display the differential temperature between the type-K and the NTC sensors. Supplied with a K-type temperature sensor, 3 x AAA batteries and instructions for use.

• Displays temperature and relative humidity
• Wet-bulb, dry-bulb temperature and dew point
• Min./Max. function
• Dimensions (W x H x D) 63 x 187 x 28mm
• Weighs 176g