Size (HxWxD)

70x70x26 mm / 2.76x2.76x1.02 inch (without stand)
70x70x45 mm / 2.76x2.76x1.77 inch (with stand)

Weight

47 g / 1.66 oz

Mounting

With stand (on a horizontal surface)
Wall mounting (using screws with head diameter 5-7 mm / 0.20-0.28 inch and max 3 mm / 0.12 inch thread diameter or double sided foam sticker)

Shell material

Plastic

Shell color

Black

ENVIRONMENTAL

Ambient working temperature

0 °C to 40 °C / 32 °F to 105 °F

Humidity

30 % to 70 % RH

Max. altitude

2000 m / 6562 ft

ELECTRICAL

Power supply

Batteries

Battery type

4 AA (LR6) 1.5 V (not included)

Estimated battery life

approx. 1 year (depending on batteries used, temperature and humidity changes, and network connection strength)

Power supply, USB

Type-C (power adapter and cable not included)

SENSORS, METERS

Internal-temperature sensor

No

Temperature sensor

Yes

Humidity sensor

Yes

RADIO

WI-FI

Protocol

802.11 b/g/n

RF band

2401 - 2495 МHz

Max. RF power

< 20 dBm

Range

Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors
(Depends on local conditions)

BLUETOOTH

Protocol

4.2

RF band

2400 - 2483.5 MHz

Max. RF power

< 4 dBm

Range

Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
(Depends on local conditions)

MICROCONTROLLER UNIT

CPU

ESP-Shelly-C38F

Flash

8 MB

FIRMWARE CAPABILITIES

Schedules

No

Webhooks (URL actions)

10 with 2 URLs per hook

Scripting

No

MQTT

Yes