Smoke Alarm HM-638PH series

Model

HM-638PHW-AC

HM-638PHW

HM-638PHM-AC

Power Supply

220–240V(50Hz, 1.2W MAX)

DC 3V, Built-in 10-Year Battery

120V AC, 60Hz, with 1 × CR-2/3AZ Backup Battery

Battery Life

Built-in 10-Year Battery Backup

10-Year Battery Backup

10 years (Battery Not Replaceable)

Transmit Power

5.7 dBm

5.7 dBm

/

Wireless Protocol

868 MHz

433 MHz

/

RadioProtocol

SRD

SRD

/

Sound Level

≥85 dB (at 3 m)

≥85 dB (at 3 m)

≥85 dB (at 10 ft)

Operating Temperature

0 °C ～ +50 °C

0 °C ～ +50 °C

40 °F (4.4 °C) ～ 100 °F (37.8 °C)

Operating Humidity

≤95% RH (Non-condensing)

≤95% RH (Non-condensing)

≤95% RH (Non-condensing)

Wireless Interconnection

Up ～ 40 Alarms Maximum

Up ～ 40 Alarms Maximum

/

Wired Interconnection

Up ～ 20 Alarms over 250 m Maximum

Up ～ 20 Alarms over 250 m Maximum

Up ～ 20 Alarms over 250 m Maximum

Dimensions

L125 mm × W125 mm × H46 mm

L125 mm × W125 mm × H46 mm

L125 mm × W125 mm × H46 mm

Certification

CE、BSI、UKCA、RCM、AS 3786

CE、BSI、UKCA、RCM、AS 3786

UL217 、CAN/ULC S531 、FCC、RCM、AS 3786