Hioki Wireless Voltage - Temp Logger LR8515

Basic specifications (Accuracy guaranteed for 1 year, Duration of the post-adjustment accuracy guarantee for 1 year)

Functionality [Used as standalone product (Data collected manually) ]
Windows PC or Windows tablet (CD-R with software included)
Android smartphone or Android tablet terminal
(Software can be downloaded free of charge from Google Play.)
*Communication range varies with the performance of the computer or tablet (up to a line-of-sight distance of roughly 30 m)
[Used as logging module (Real-time measurement) ]
Device can be used as an LR8410 logging module to record and display data in real time and to control up to 7 units, Communication distance: 30 m Number of channels 2 ch (isolated; select voltage of thermocouple for each channel), Input terminals: M3 screw type terminal block Measurement items Voltage/ Thermocouple (K, T) Maximum input voltage ±50 V DC, Max. inter-channel voltage 70 V DC Measurement range [Voltage] ±50 mV to ±50 V , Max. resolution 0.01 mV
[Thermocouple] -200 ˚C to 999.9 ˚C, Thermocouples (K, T), Max. resolution 0.1 ˚C Measurement accuracy [Voltage] ±0.05 mV (50 mV range)
[Thermocouple] ±0.8 ˚C (Thermocouple K -100 ˚C to 999.9 ˚C)
*Reference junction compensation: Switchable between internal and external
*Reference junction compensation accuracy: ±0.5 ˚C 
(When using internal compensation, add to thermocouple measurement accuracy.)
*Temperature characteristics: Add (measurement accuracy × 0.1) / ˚C to measurement accuracy. Display items Measurement value, date, time, number of recorded data, maximum value, minimum value, and average value Functions Alarm, Scaling, Recording operation hold function, Erroneous operation prevention, Comment recording function, Power saving function, Authentication function, Free run Recording [Capacity] 500,000 data items for each channel [Mode] Instantaneous value [Interval] 0.1 to 30 sec, 1 to 60 min, 16 selections Power source AC Adapter Z2003 (AC100 V to 240 V, 50 Hz/60 Hz), AA alkaline batteries (LR6) ×2, External power DC5 V to 13.5 V (can also be supplied from USB bus power, with a conversion cable) Continuous operating time ([Capacity] 500,000 data items for each channel) (23˚C) 2.5 months (Recording interval of 1 min, Bluetooth® OFF), 7 days (Recording interval of 1 sec, Bluetooth® ON), 2 days (Recording interval of 0.1 sec, during real-time measurement with the LR8410) Dimensions and mass 85 mm (3.35 in) W × 75 mm (2.95 in) H × 38 mm (1.50 in) D, 126 g (4.4 oz) (Not including the battery) Accessories CD-R ×1 (Instruction Manual, Logger Utility, Wireless Logger Collector), Measurement Guide ×1, Caution for Using Radio Waves × 1, AA alkaline batteries (LR6) ×2
data logger