Features:
Display four-channel indoor outdoor temperature & humidity at the same time with ?/? temperature unit for selection.
Adopt wireless technology, you can know 3 outdoor temperature & humidity in indoor receiver.
Record max/min indoor & outdoor temperature & humidity with temperature trend indication.
Alarm function of upper & lower limits of indoor & outdoor temperature & humidity.
Can be placed on the table with a bracket or hung on the wall with a hanging hole.
With 3 portable transmitter to induce 3 outdoor temperature humidity & transmit within 100m without obstacle.
Temperature humidity meter is powered by 3 * 1.5V AAA batteries or DC 5V, each transmitter is powered by 2 * 1.5V AA batteries. (Not included)