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| Outstanding Function | 1.Work alone or with alarm system 2.Test button for easily testing 3.Low battery signal | ![]() |
| Power Supply | 6F22 9V battery (not included by default) | |
| Wireless Frequency | 433MHz±0.5MHZ | |
| Alarm Loudness | ≥ 75dB | |
| Standby Current | 10µA | |
| Alarming Current | ≤40mA | |
| Horn Level | 75 Decibels at 10 feet | |
| Installation | Ceiling or Wall Mounting | |
| Humidity | 10%-90% rh | |
| Battery Lifespan | About 6 -12 months | |

| Estimated Delivery Time(Subject to Stock Availability) | ||
| USA (excl. Alaska, Hawaii, Puerto Rico) | USPS First-Class Package/ UPS SurePost/ UPS Ground | 3-7 business days |
| Other Countries (May depart from other stock location) | International Airmail Service | 12-21 business days |