Wireless magnetic door and window sensor for alarm systems PNI-HS002LR
Are you looking for a reliable and affordable way to protect your home, office or business premises from unauthorized entry? The wireless magnetic door and window sensor for alarm systems PNI-HS002LR is an indispensable security element that detects any attempted break-in before an uninvited guest even enters the building. With its help, you will raise the level of security of your property to a completely new level without wasting your assets.
This high-quality magnetic sensor works on the simple but extremely effective principle of a magnetic switch (reed switch). When a door or window is opened by more than 1.5 cm, the magnetic contact is broken. The sensor immediately sends a wireless signal to your alarm control panel, which triggers a loud alarm or sends you an instant notification on your smartphone. Forget about complicated cable laying, ducting and time-consuming drilling of holes - advanced wireless technology allows for a clean, fast and aesthetic installation that will not spoil the look of your home.
Why choose the PNI-HS002LR wireless magnetic sensor?
The safety of your property and family is always a top priority. This sensor is designed with maximum reliability, long life and extreme ease of use in mind. It combines advanced detection technology and extremely economical operation, providing long-lasting protection without the need for constant maintenance or frequent battery replacement. It is suitable for residential buildings as well as commercial premises, warehouses or weekend cottages.
Key features and technical advantages

Immediate action in milliseconds: The sensor reacts the moment the door or window opens by more than 1.5 cm and immediately sends an opening/closing code to your central unit.
Wireless freedom (433 MHz frequency): With a signal transmission range of up to 100 meters in open space, you can also install the sensor on more distant windows, doors or auxiliary buildings without worrying about signal strength.
High intelligence and sensitivity: The built-in advanced microprocessor chip and dual infrared detection element effectively prevent false alarms and ensure exceptional operating accuracy.
Easy installation without cables: Since the sensor works completely wirelessly, there are no cables, wires or drilling into walls required. Installation is quick, clean and suitable for any DIYer.
Compact and discreet design: With its dimensions of only 67 x 40 x 12 mm and elegant white housing, the sensor blends seamlessly into any style of joinery and does not stand out.
Versatile compatibility: Perfectly adapted for the PNI CM002 wireless alarm system and other compatible systems operating at a frequency of 433 MHz.

Main benefits for the user
By purchasing the PNI-HS002LR sensor, you will finally have a peaceful sleep. Whether you are at work, on a long trip or sleeping carefree on the upper floor, this small but extremely effective device will constantly watch over all the entrances to your home. The device is made of robust and high-quality materials that ensure a long service life and stable operation in a wide temperature range from -10 °C to +50 °C.
The sensor easily adapts to different types of doors and windows (wooden, PVC, aluminum), allowing you to use it throughout your entire facility. It is powered by an efficient 3V CR2450 battery, which is included in the package. Thanks to optimized energy consumption and smart power management, the battery provides long months of uninterrupted operation without the need for replacement.
Technical specifications and features
See detailed technical data below, confirming the quality, reliability and versatility of this wireless magnetic sensor:

Model / SKU: PNI-HS002LR
Alarm distance (detection): Less than 1.5 cm (when the distance between the magnets increases above this limit, an alarm is triggered)
Power supply: 1 x CR2450 3V battery (battery already included in the package for immediate use)
Operating frequency: 433 MHz
Signal transmission distance: Up to 100 m in open space (in buildings, depending on obstacles and walls)
Technology: Dual infrared detector element and advanced microprocessor chip
Functionality: Sending codes for opening and closing doors/windows to the alarm control panel
Operating temperature range: -10 °C to +50 °C (suitable for indoor use and protected passages)
Dimensions: 67 x 40 x 12 mm
Weight: 280 g (with battery included)
Compatibility: Suitable for the PNI CM002 wireless alarm system and other compatible systems at a frequency of 433 MHz

Easy installation in just a few minutes
You don't need expensive security technicians or experts to install this sensor. The sensor consists of two parts: a larger transmitter (which houses the battery and electronics) and a smaller magnet. Simply attach the transmitter to the fixed part (door or window frame), and the magnet to the movable part (door or window leaf). You can use the included double-sided adhesive tape or small screws to attach it. It is only important that the distance between the two parts is less than 1.5 cm when closed. When the system is activated, your safety net is immediately established.
Frequently Asked Questions (FAQ)
How far from the alarm control panel can I install this magnetic sensor?
The PNI-HS002LR wireless sensor boasts an excellent signal transmission range of up to 100 meters in open space. In enclosed spaces with walls, doors and other obstacles, this distance may be slightly reduced, but it easily covers average residential buildings, larger apartments and standard business premises.
What kind of battery does the sensor use and do I need to buy it separately?
The sensor uses a high-capacity CR2450 3V button battery. The big advantage is that the battery is already included in the package, which means that the device is ready for immediate installation and use. Thanks to the advanced microprocessor and extremely low power consumption, the battery ensures long-lasting and stable operation.
Is this sensor suitable for mounting on metal or PVC doors?
Yes, thanks to its compact design, low weight and universal magnetic field operation, the sensor is extremely flexible. It can be easily installed on wooden, plastic (PVC) or metal doors and windows, and also works great on sliding doors, garage doors or skylights.


Responsible persons:
PNI - SC ONLINESHOP SRL, Olteniei, nr. 26A, 610206, Piatra Neamț, Neamț, Romania, comenzi@pni.ro, +400787551177
Distributor for Slovenia: Haloorodje.si, Online Sales, Rok Groznik sp, Podturn 42, 8350 Dolenjske Toplice, info@haloorodje.si, +38669731944, Slovenia
Product origin: China

Instructions for using the product:
• Surface preparation:
• Thoroughly clean and degrease the surface of the door frame and door or window sash where the units will be installed.
• Battery insertion and pairing:
• Open the housing of the larger unit (transmitter) and insert the supplied battery (pay attention to polarity).
• Switch the alarm control panel to the mode for adding new sensors.
• Move the transmitter and the smaller magnetic unit apart so that the sensor sends a signal and learns from your alarm system.
• Installation of units:
• Stick the larger unit (transmitter) with the included double-sided adhesive tape (or screw it in) to a stationary part (door frame/window frame).
• Place the smaller unit (magnet) on the movable part (door leaf or window leaf).
• Correct alignment:
• Align both units so that they are parallel in the closed position. The markings on the housings should face each other.
• The distance between the magnet and the sensor in the closed state must not exceed 10–15 mm (depending on the model).
• Performance testing:
• Open the window or door and check whether the LED on the sensor lights up and whether the control panel detects the opening.

Useful tips for work:
• Correct placement: Always place the transmitter on a fixed part (frame) and the magnet on a movable part (sash). This prevents vibrations and strong impacts when closing, which could damage the electronics.
• Be careful with metal surfaces: If you are mounting the sensor on metal or aluminum doors/windows, use caution when using magnetic sensors, as metal can reduce the range of the magnet or weaken the wireless signal. In this case, use plastic spacers to keep the sensor away from the metal.
• Regular testing: At least once every few months, test the sensor's operation and battery status via the mobile app or alarm control panel.
• Low battery indicator: Most modern sensors will alert you to low battery levels via an LED indicator or app. Replace the battery immediately upon notification.

Warnings:
• For indoor use only: The sensor (unless specifically marked as waterproof) is not intended for outdoor use. Moisture, rain and extreme temperatures can damage the electronics.
• Signal range: Before final mounting with adhesive tape, check whether the wireless signal between the sensor and the control panel at the selected location is strong and stable enough (especially through thick load-bearing walls).
• Battery safety: Keep batteries out of the reach of children. Dispose of used batteries in designated recycling containers.
• Do not cover the sensor: Do not paint or cover the sensor with metal decorations, as this may prevent the radio signal from being transmitted.

It is important to know

This magnetic sensor is suitable for anyone who wants to expand their alarm system to control doors or windows - especially where you already have a smart security center. Before purchasing, consider whether your existing system supports the appropriate connection and whether you are ready for additional setup. This type of solution is not intended for standalone use, so it will be right for those looking for greater protection and centralized control of their home.

• You need a suitable control panel – the sensor itself does not work without it, so check compatibility with your current alarm system or hub.
• The sensor is not WiFi, which means fewer options for direct connection to a mobile app or remote control without additional equipment.
• It is suitable for installation in difficult-to-reach places, but be aware of the possible need for maintenance (replacing batteries or checking connections).
• If you expect more different functions (e.g. motion detection, temperature measurement), you will need additional or different sensors, as this product only covers opening and closing.

Source of editorial recommendations: general guidelines for product selection.

In practice

🏠 Home use

🟢 Effective for basic door or window control in conjunction with an existing control panel and alarm.

👨‍👩‍👧‍👦 Family

🟡 Useful as part of an entire security system - safe, but not suitable for standalone use or quick notification without a central station.

🔒 Security/Security

🟢 Suitable for an additional layer of protection in apartments or houses where detecting the opening of critical passages is important.

Answers to frequently asked questions

Does the sensor work without a control panel?

No, for operation, an appropriate control panel is required, with which the sensor must be compatible.

Can I receive notifications on my phone?

Only if your alarm system or control panel supports this feature and has a connection to your mobile application.

How often is maintenance required?

Maintenance depends on the power supply and installation - it is usually recommended to periodically check the operation and replace the batteries if necessary.

Is the sensor compatible with smart assistants (Google Home, Alexa)?

Compatibility depends solely on your control panel or smart hub, not the sensor itself.

Can I use the sensor on sliding doors or windows?

In most cases, it is possible, but it is important that the magnetic contact is installed correctly - check the manufacturer's instructions and the shape of the fitting.

Description updated: July 2026

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