Audio Amplifier module
$1.36
Electronic Modules＆Displays
W3230 DC12V Digital Temperature Controller Microcomputer Thermostat Switch
Price range: $1.40 through $1.42
This product has multiple variants. The options may be chosen on the product page 
Battery Chargers＆Accessories
CN3761 Lithium Battery Charger Protection Board Module 5V-15V for 4.2V Solar Panel
$1.86
IoT and Wireless
4 Channel Wireless Four Button RF Remote Control Transceiver Module (Mode: Non Locking)
$1.45
