4-wire Smoke Detector with Relay output smoke alarm with Dry contact DC9-35v

4 wire Smoke Detector with Relay output smoke font b alarm b font with Dry contact
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4 wire Smoke Detector with Relay output smoke alarm with Dry contact DC9 35v
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Price:  US $6.90 / piece

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4-wire Smoke Detector with Relay outputsmoke alarm with Dry contact DC9-35v This product named Photoelectric smoke detector(hereinafter called detector) detects the smoke by a couple of infrared diodes. The principle of detecting is granule in the smoke can reflect infrared light. Infrared diodes are placed in the special chamber. The chamber can shield external light, but doesn’t affect the smoke into it. While there is no smoke, the diode can receive very weak infrared light. When the smoke entering the chamber,diode can receive more and more light,and the detector can give out alarm signal when the smoke attains the certain density. In order to reduce the interference and lower power consumption, the emitting circuit adopts the pulse signal. TECHNICAL SPECIFICATION PRODUCT CATEGORY 4wire OPERATING VOLTAGE DC9-35V STANDBY CURRENT ≤200uA(relay N.O.)@DC24v ≤9mA(relay N.C.) @DC24 ALARM CURRENT 45mA(relay N.O.) ​ 9mA(relay N.C.) ALARM INDICATION RED LED ON TEMPERATURE RANGE -10℃~+50℃ HUMIDITY 0%~95%RH(NO CONDENSATION) ALARM OUTPUT Remote LED RELAY OUTPUT CONTACT RATING N/A 100mA@DC 28V SENSITIVITY 0.5dB/m(±0.1dB/m) DIMENSION 100 * 42mm Connection Description 4 wire smoke detectors : base terminals“ 1” and “2” for DC power input ,non-polarized .“3” for relay output com,“4” for relay output N.C. or N.O.


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1. Please understand the relationships between the value of Invoice declaration(for custom clearance) and the risk in your country, such as Brazil. Much lower value declaration may cause problem/risk during custom clearance. 2. Please leave a tax number under your order for delivery requirement. 3. All international expresses delivery are not allowed to send battery, so Batteries are not included in the independent smoke, the encoder and panel shipments. 4. For the free shipping products , we will choose one express which is convenient for both of us .If you don’t like any specific international express, please feel free to tell us, we will change to another.

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Shipping Company Shipping Cost Estimated Delivery Time
DHL 3 - 7 days
UPS Expedited 3 - 7 days
EMS 5 - 14 days
Post Air Mail Free Shipping 15 - 45 days
Return Policy If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.

N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).
Price:  US $6.90 / piece
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