Specifications:
Type: ZL77A(Battery Version), ZL77B(Charging Version), GL77A(Battery Version), GL77B(Charging Version)
Detectable gas types:
CFCs: R11, R12, R500, R503
HCFCs: R22, R123, R124, R502
HFCs: R134a, R404a, R125
Measurement range: 0–1000PPM
Resolution: 1PPM
Sensitivity: R12/R22/R134a @ 0.5 ounces per year (14 grams/year)
Warm-up time: 30 seconds
Response time: >10 seconds
Sampling method: Diffusion type
Power source: 2 x No.7 batteries or lithium battery
Runtime: Approximately 6 hours
Display: LED LCD with dual-color backlight
Reading outputs: Sensor reading, battery level, concentration unit, temperature
Alarm functions: Low/high alarm settings, sound alerts, red screen backlight
Audio prompt: Higher frequency buzz indicates higher gas concentration
Operating temperature range: -10°C to 50°C

Features:
1.Multi-Gas probe: Efficiently detects various refrigerant gases, including CFCs, HCFCs, and HFCs, making it compatible with R22, R134a, R410a, and more for diversified HVAC needs.
2.High Sensitivity Analysis: Precise probe with a sensitivity of 0.5 ounces/year ensures reliable identification of even minimal refrigerant leaks.
3.Real-Time Alerts: Dual-color LED backlight and audible alarms provide immediate feedback, enabling quick and accurate leak assessment.
4.User-Friendly LCD Display: Clear readings of gas concentration, temperature, and battery level offer smooth operation in different scenarios.
5.Long Battery Life: Designed to run for up to six hours continuously, ensuring dependable performance during extended troubleshooting tasks.

Package Included:
Charging Version:
1 x Halogen Leak Detector
1 x USB Charging Cable
1 x Instruction Manual
1 x Color Box
1 x Screwdriver
Battery Version:
1 x Halogen Leak Detector
1 x Instruction Manual
1 x Color Box
1 x Screwdriver