SIEMENS OH921 Heat Heat/smoke

( Brand: Siemens ), ( Manufacturer Part Number: OH921 ), ( Type: Fire Detection )

Review SIEMENS New Heat/smoke

The Siemens OH921 is a high-performance heat and smoke detector designed for commercial and industrial applications where early warning is crucial for safety. This device is part of Siemens's OH series, which is renowned for its reliability, accuracy, and versatility.

The OH921 is a multi-sensor device that can detect both heat and smoke. It uses a state-of-the-art photoelectric smoke sensor and a temperature sensor to ensure comprehensive fire detection. The smoke sensor is designed to detect large particles of smoke that are often indicative of a fire, while the temperature sensor can detect heat levels above a set threshold.

The OH921 is equipped with a highly sensitive and accurate temperature sensor. It can detect a temperature rise of as little as 14 F (7 C) above the ambient temperature. This sensitivity makes it suitable for use in environments where a fast response is essential, such as kitchens, laboratories, or production areas.

The smoke sensor in the OH921 uses an advanced photoelectric technology. This technology uses a light source and a light beam to detect smoke particles. When smoke enters the sensor chamber, it scatters the light beam, causing a change in the current that is then detected by the device. This technology is highly effective at detecting even the smallest amounts of smoke, making it ideal for use in areas with high airborne contaminants or in environments where early warning is crucial.

The OH921 is also equipped with a self-diagnostic feature that allows it to check its own functionality regularly. This feature helps ensure that the device is always in optimal working condition and reduces the risk of false alarms or missed detections.

The OH921 is designed for easy installation and integration into existing fire detection systems. It can be connected to a fire alarm control panel using a standard two-wire connection. The device is also compatible with various protocols, including MODBUS, M-BUS, and Siemens's SAFERTAG, making it a versatile addition to any fire detection system.

The OH921 is built to last, with a robust and durable design that can withstand harsh environmental conditions. It is rated for use in environments with a temperature range of -4 F to 140 F (-20 C to 60 C) and a humidity range of 0% to 95%. The device is also resistant to dust and water, making it suitable for use in industrial settings where environmental conditions may be challenging.

In summary, the Siemens OH921 is a high-performance heat and smoke detector that offers comprehensive fire protection for commercial and industrial applications. Its advanced multi-sensor technology, self-diagnostic feature, and easy installation make it a reliable and effective addition to any fire detection system. Its robust design and versatile compatibility make it suitable for use in a wide range of environments and applications.

Siemens OH921 is a combined heat and smoke detection system designed for commercial and industrial applications. Here are some pros and cons of buying this system:

1. Reliability: Siemens is a well-known brand in the fire safety industry, and the OH921 system is known for its reliability and durability.

2. Advanced Technology: The system uses photoelectric and ionization smoke sensors, as well as heat detectors, to provide early warning of potential fires. It also features self-diagnostic capabilities and remote monitoring.

3. Flexibility: The system can be easily integrated with other fire safety systems and building automation systems, making it a flexible solution for various applications.

4. Easy Installation: The system comes with a user-friendly design and easy-to-follow instructions, making installation a straightforward process.

5. Cost-Effective: The OH921 system offers a cost-effective solution for large-scale fire safety applications, as it can cover a large area with a single device.

1. Complexity: The system may be too complex for small-scale applications, as it requires professional installation and maintenance.

2. Cost: The initial investment for the system can be high, especially for larger installations.

3. False Alarms: The system may generate false alarms due to its sensitivity to dust, steam, and other environmental factors.

4. Power Requirements: The system requires a continuous power supply, and a backup power source is recommended for ensuring uninterrupted operation during power outages.

In conclusion, the Siemens OH921 heat/smoke detection system offers advanced technology, reliability, and flexibility for commercial and industrial applications. However, it may be too complex and costly for small-scale applications, and it requires professional installation and maintenance. If the advantages outweigh the disadvantages for your specific application, the OH921 system can be a recommended solution for ensuring fire safety.

Details:

BRAND NEW SIEMENS OH921 HEAT/SMOKE Free Shipping.

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• $25.50-$59.00

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• brand: Siemens
• mpn: Oh921
• type: Fire Detection

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• # reviews: 933

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