Perfect-Prime TC41, 4-Channel K-Type Digital Thermometer Thermocouple Sensor -200~1372&deg;C/2501&deg;F 4-Channel K-Type Digital Thermometer Thermocouple Sensor Measurement Temperature range: - 200C ~ 1372C (-328F ~ 2501F) K Type Temperature resolution : 1000C : 1C/F / K Item includes: 1 x Meter and 4 Probe sensor (length ~ 95cm each, -30C to 300C) Battery:9V DC (not included)