Secure Payment & Return Policies
Secure Payment & Return Policies

We use highly secure payment platforms, including Shop, Shopify Payments, Paypal, and Google Pay, to ensure your peace of mind. Here's what you can count on:
-
Secure Transactions: Our partners are industry leaders in payment security, using cutting-edge encryption to protect your data.
-
Fraud Protection: Rigorous fraud detection measures are in place to safeguard your transactions.
-
Flexible Payment Options: Choose from various trusted payment methods, including credit cards and digital wallets like Google Pay and Paypal.
-
Buyer Protection: Benefit from the buyer protection policies of our partners, ensuring refunds and dispute resolution.
-
Satisfaction Guarantee: We're confident in our products, and our customer support team is here to assist you if any issues arise.
- Return Policies: Please visit our policies to safely return any products that doesn't match your expectations.
Please feel free to contact us through our contact channels, our online chat there is always a team member online to help you out! If you prefer to call, our number is 0 401 690 551.
FAQs - Frequently Asked Questions
FAQs - Frequently Asked Questions
- Regular price
- $88.00

Business Credit Account Application
(Click here to see full screen)
Apply for a Business Credit Account with Tecnologia Shop, our team will review your application and contact you in 24h.
Upon approval, you will receive credit to spend on our store shown directly in your checkout along with all information needed.
Siemens Flush-Mount Room Sensor AQR253… and AQR254… series. These sensors provide an array of functions to ensure your indoor environment remains comfortable and energy-efficient. From CO2 concentration measurement to VOC sensing and temperature and humidity monitoring, these room sensors have you covered.
Key Features:
-
Active Flush-Mount Design: The room sensor comprises a front module, base module, and a design frame accessory that can be ordered separately. Its flush-mount design seamlessly integrates into your interior, providing unobtrusive and effective monitoring.
-
Voltage Flexibility: The sensor operates at either AC 24 V or DC 15-36 V, offering flexibility in its power source.
-
Versatile Signal Outputs: Choose from adjustable signal outputs to suit your specific requirements, including DC 0-10 V, DC 2-10 V, DC 0-5 V, DC 0-20 mA, DC 4-20 mA, or DC 0-10 mA.
-
CO2 Sensing: The sensor employs a maintenance-free CO2 sensing element based on optical infrared absorption measurement (NDIR). This feature allows for precise monitoring of CO2 concentrations in the air.
-
VOC Sensing: A VOC sensing element, based on a heated tin dioxide semiconductor, enables the detection of volatile organic compounds, providing insight into odors within the space.
-
Indoor Air Quality (IAQ) Determination: The sensor enhances indoor air quality by selecting the maximum value from CO2 and VOC sensing signals. This allows for effective air quality management.
-
CO2 LED Indicator: A built-in LED indicator displays the current CO2 concentration, keeping you informed about the air quality at a glance.
-
Wide Operating Range: With a field of use spanning from 0°C to +50°C, 0-95% relative humidity (non-condensing), and 0-2000 ppm, this sensor is ready to perform under diverse conditions.
-
Multi-Sensor Functionality: The sensor acts as an active multi-sensor for CO2-temperature, CO2-humidity, and humidity-temperature, providing comprehensive data for climate control.
-
Passive Temperature Sensor: The room sensor incorporates a passive temperature sensor (LG-Ni1000 / NTC 10k) to accurately measure temperature.
Applications:
The Siemens Flush-Mount Room Sensor AQR253… and AQR254… series offer exceptional versatility, making them ideal for various applications:
-
Party Rooms and Exhibition Halls: Measure CO2 and VOC concentrations in settings where numerous people gather.
-
Smoke-Free Environments: Monitor CO2 concentrations in spaces with varying occupancy, such as museums, theaters, offices, and classrooms.
Please note that these devices are not intended for safety applications, such as gas or smoke detection.
Part Numbers:
AQR2540NH Flush mount sensor base module Temperatue & Humidity (S55720-S143)
AQR2546NH Flush mount sensor base module CO2 (S55720-S150)
AQR2570NH Flush mount sensor base module Temperatue & Humidity with KNX (S55720-S204)
AQR2576NH Flush mount sensor base module CO2 with KNX (S55720-S208)