The Beta-1 is a simple solution for the Mini Split Air Conditioners. 
It uses the remote control that came with your mini split air-conditioner to “learn” how to change the setpoints on the mini-split. Just about any brand of mini-split unit can be controlled by the Beta-1. Once the Beta-1 learns the signals from your remote controller, it will automatically change the setpoint on the mini-split to two separate Day and Night temperatures. It does this AUTOMATICALLY by using a small IR (infrared) emitter / sending unit that will send the same signal to the mini-split, as the remote control would normally send.

Features:

LCD Display

Built-in Photocell sensor 

Day-Night Control

Included In Box:

1 x Beta-1 Controller

1 x Signal Emitter

Technical Specifications:

Input Voltage:                                      120 Volts AC 

Maximum Current:                               0.2A

Working Environment:                        Temperature 32-122°F, Humidity=90%

AC Power Cord Length:                       1.8m

Packaging Dimensions:                       275mm(L) x 87mm(W) x 94mm(H)

Gross Weight:                                      0.56kgs

Manual Link:
https://www.trolmaster.com/PDFHtml/BETA-1.html