Description
202 DC heat alarms provide battery powered smoke and heat detection, and alarm functions within a single unit.
Electronic thermistor sensing and microprocessor control delivers reliable performance and low maintenance.
202 DC heat alarms are battery powered, do not require a mains supply, and are suitable for residential applications where smoke or gas detectors may cause unwanted alarms (such as cooking areas or parking garages).
Features
- Fixed temperature and rate-of-rise operation using electronic thermistors with microprocessor control
- Integrated indicator provides visual indication of an alarm condition
- Test button verifies battery and alarm operation
- Loud 85 dB sounder to alert occupants
- Surface-mount device (SMD) circuit board design
- Single DC 9 V user-replaceable battery provides up to 18 months operation under normal conditions
- 30 day low battery warning signal
- Interconnection function available to connect up to 38 units together
- Battery missing indicator prevents the unit from being installed without the battery fitted
- Attractive housing design provides protection for the heat sensor
- Easy installation
Specifications
| Power source |
DC 9 V |
| Quiescent current |
7 µA |
| Quiescent condition indicator |
Flashing red LED every 32 s |
Alarm response threshold
(rate-of-rise) |
< 20 °C / min |
Alarm response threshold
(fixed temperature) |
57 °C |
| Audible alarm sounder output |
≥ 85 dB @ 3 m |
| Visual alarm indicator |
Flashing red LED |
| Low battery signal |
Audible signal each 30 s for 32 days |
| Number of interconnected units |
38 |
| Operating temperature |
(0 ~ +50) °C |
| Operating humidity |
(10 ~ 90) % RH, non-condensing |
| Dimensions |
Φ 100 mm × 40 mm |
Ordering information
| Part Number |
Interconnect |
| 202-03 |
- |
| 202-04 |
√ |
About Numens
Formed in 2010, Numens is an emerging supplier of professional safety products for fire detection and alarm systems. Numens supplies an extensive range of addressable, non-addressable and residential products for life safety and property protection applications. Offering over 150 products and supplying to more than 100 customers around the globe, we are committed to establishing long-term relationships with our customers and suppliers.
Mission and Values
Our mission is to provide building owners with high quality, inexpensive fire detection and related equipment that will protect lives of building occupants and minimize damage to buildings through early detection and warning of a fire emergency.
Our engineers, production and support staff will design, manufacture and deliver products with performance and quality to always delight our customers.
Success in our future depends on the integrity and ethical behaviour of all our employees. We support and nourish our staff to improve and grow as responsible members of a civil society. We take personal responsibility for our actions and respect others with different views, as we continually strive for improvements for our customers, our company and ourselves.
Capabilities
Sales, engineering and production are located in Ningbo, China; just 2 hours south of Shanghai. Our Ningbo site has 10,000 m2 (100,000 ft2) of floor-space. From product concept, electrical and mechanical design, we can provide the solutions to detection needs. Our manufacturing is vertically integrated, with our capabilities including tool-making, plastic injection moulding, SMT manufacturing, and final assembly and test.
You can view our product range on our website or in our product catalogue (document number 34-0001).
Standards and Approvals
Standards approvals are important to us, giving customers additional confidence of the performance and reliability of our products. We are certified to ISO 9001:2008 and our products carry approvals to major European and North American Standards.
Audited Supplier 
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