New units detect slow smoldering flames in every direction and send audible alarms at least 65dB. Many meet EN 14604 and UL 217 requirements.

Sensor lasts up to 10 years

Heiman Technology Co. Ltd
The ceiling-mount model HM-626PHS standalone optical smoke detector from Heiman adopts an IR photoelectric sensor and is powered by a 3V lithium battery with a 10-year life span. Its MCU prevents false alarms and warns of low battery. The LPCB-, VDS- and NF-approved unit has a sensitivity of 1.8±0.8ft, 85dB at 3m sound level, anti-RFI function of up to 20V/m at 1GHz, and static and alarm current of 8μA and 35mA. The 95x41mm device is dust-, moth- and shock-resistant, and has UL 217 and EN 14604 certification.

LPCB-, VDS- and NF-approved

Heiman Technology Co. Ltd
Heiman also offers the LPCB-, VDS- and NF-approved HM-625PHS model that runs on a 3V lithium battery that lasts up to 10 years. The UL 217- and EN 14604-certified optical smoke detector integrates an IR photoelectric sensor and an MCU, which prevents false alarms and indicates low power. The device has a has a sensitivity of 1.8±0.8ft, 85dB at 3m sound level, anti-RFI function of up to 20V/m at 1GHz, and static and alarm current of 8μA and 35mA. It is dust-, moth- and shock-resistant, and measures 95x41mm.

Adopts light-scattering method

Shenzhen Lingbao Electronics Co. Ltd
Shenzhen Lingbao's model AK-200FC/F6 smoke alarm has a photoelectric sensor and uses the light-scattering method to detect smoke. The minimum sound output is 85dB at 3m while the heat sensor's trigger temperature can be adjusted to 60, 70 or 80 C. Static and alarm current are ≤40uA and ≤120mA, respectively. The device integrates a red LED indicator, low-battery alarm and missing battery lock-out feature. It runs on a 9V battery.

0.15dB/m response threshold

Shenzhen Orinsong Technology Co. Ltd
Shenzhen Orinsong incorporates a photoelectric sensor, CMOS, high-stability optical chamber and network by current relay to its OR-S816 model. The dust-, moth-, moisture- and tamper-resistant, and anti-white light smoke detector has a response threshold of 0.15dB/m and detecting area of 60sqm. Static and alarm current are ≤50uA and 40 to 80mA while input voltage is 10 to 35V. The 100x48mm ceiling-mount unit has a maximum ripple voltage of 30 percent, 0.03uF maximum electric capacitance, ≤60s response time, 20m/s anti-wind capacity, and 2, 3 or 4-wire nonpolarized wiring.

Ionization sensor

Shenzhen Soan Electronic Technology Co. Ltd
The model SN202 optical smoke detector from Shenzhen Soan utilizes an ionization sensor, and has a static and alarm current of 10¼A and 10mA. The sound output reaches 85dB at 3m. The 140x41mm unit has an ambient temperature and humidity of -10 to 60 C and 95 percent RH, respectively. It warns of low battery seven to 15 days before power runs out. The device operates via 9V battery, and complies with UL 217, EN 14604, CE and RoHS.

≤4μA static, ≤12mA alarm current

Shenzhen Taian Electronics Co. Ltd
The model TA-6989 smoke detector from Shenzhen Taian adopts an optical sensor, and has a static and alarm current of ≤4μA and ≤12mA. Sound output is ≥85dB at 3m. The unit's ambient temperature and humidity are -10 to 60 C and ≤95 percent RH. It is powered by a 9V battery.

≥85dB at 3m

Shenzhen Taian Electronics Co. Ltd
Shenzhen Taian's selection also includes the TA-3280 model with an optical sensor. The smoke detector runs on a 9V battery, and has a static and alarm current of ≤4μA and ≤12mA. Ambient temperature and humidity are -10 to 60 C and ≤95 percent RH. Sound output is ≥85dB at 3m.

Test/hush feature

Xiamen Vs-Top Electronics Co. Ltd
Xiamen Vs-Top's model VST-S588H smoke detector uses a photoelectric sensor with a sensitivity of 0.08 to 0.16dB/m. It incorporates a low-battery and battery-missing indicators, self-test button, and test/hush and auto-reset functions. Sound output is ˃85dB. The insect-resistant device adopts a nonradioactive technology to ensure that is it environment-friendly. It runs on 9V battery, and meets EN 14604, BVQI and CE requirements.