Pololu NiMH Pack 7.2V 2200mAh 3x2 AA - POL2225 mercury free Sensing range: -10 ~ 80

Sensing range: -10 ~ 80 °C

when the B button is pressed

so using a DFRobot URM07 built-in temperature sensor

for your Arduino

It includes pH 4

Pololu NiMH Pack 7.2V 2200mAh 3x2 AA - POL2225 mercury free Sensing range: -10 ~ 80NiMH Rechargeable Battery Pack 7. 2V 2200mAh (32 AA AA Cells) The Pololu NiMH Battery Pack 7. 2V 2200mAh (32 AA AA) is a pre assembled rechargeable pack perfect for powering robots, servos, and motor driven projects. NiMH packs deliver consistent voltage under load and can be recharged hundreds of times. For robotics: NiMH packs are popular for Pololu robots and servo based projects because they handle high current motor demands better than alkaline