This Newly released SAL-1700 is ideal for measuring the salinity & temperature of your aquarium. 

FEATURES:

• Designed for seawater salinity analysis (not NaCl)
• Ideal for pools, saltwater aquariums
• High accuracy measurements displayed as PSU, ppt and specific gravity
• Large LCD display – horizontal angle for easy viewing
• Waterproof housing - withstand use around your aquarium. 
• Automatic Temperature Compensation

SPECIFICATIONS: 

• Salinity Range: PSU - 0.0 - 55.0 or Specific Gravity: 1.000 - 1.042 or PPT: 0.0 - 105.0
• Temperature Range - 1 – 99° C / 33° F - 210° F
• Salinity Resolution: PSU - 0.1 or Specific Gravity: 0.001 or PPT: 0.1
• Temperature Resolution - 0.1° C / 0.1° F
• Salinity Accuracy - PSU: ±2.0 or Specific Gravity: ±0.002 or PPT: 0.0-55.1 : ±2.0 / 55.1 - 100.0 : ±5.0
• Temperature Accuracy: +/- 0.5° C (+/-0.5° F)

IN THE BOX: 

•  SAL-1700 Salinity and Temperature Meter
• 2 Pack AAA alkaline batteries