Meet the ALLNET MSR ALL4420, a compact sensor for humidity and temperature housed in a white, flat aluminum enclosure. Designed for desktop or wall mounting, it's ideal for indoor environments, labs, and automation projects. Its I2C bus supports multiplexing, making it easy to expand your sensor network.

Key Features & Design

• All-in-one sensor: measures both humidity and temperature.
• Sturdy enclosure: new flat desktop- / wall-mount aluminum housing in white.
• Compact, versatile form factor: suitable for desktop placement or wall mounting.
• I2C bus for multiplexing: convenient integration and expansion on a single bus.
• Wide range: temperature from -40 to +125 °C; relative humidity from 0 to 100% RH.
• High-resolution temperature reading: 0.01 °C resolution.

Performance & Benefits

This sensor delivers reliable environmental data for monitoring, logging, and automation tasks. The combination of a durable aluminum enclosure and a precise temperature resolution enables accurate readings in demanding environments, while the flat, versatile housing supports easy installation on a desk or a wall. With the I2C multiplexing capability, you can scale your sensor network without overloading microcontroller pins, making it straightforward to monitor multiple zones or devices from a single controller.