The optical parameters of GR3 are as follows: geometry is ASTM-E-1709, the incident angle is -4 degrees, the observation angle is 0.2 degrees, 0.5 degrees, and 1.0 degrees, and the measurement range is Φ30mm/1.2inch and Φ15mm/0.6inc. The spectral response A light source and the visibility function V (λ) meet the requirements of section 6.4.2 (filter selection) of ASTM E 1709. The range (cd•m-2•|x-1) is 0-2000.
The Retrosign GR3 is an RFID reader designed for industrial and field applications. It supports 13.56 MHz RFID tags (ISO 15693 and ISO 1443A/B) and includes Bluetooth connectivity and a rechargeable NiMH battery.
The manual lists the device’s operating temperature (0 °C ~ +50 °C), storage temperature (‑15 °C ~ +55 °C), measurement range (30 mm ~ 15 mm), dimensions (295 × 83 × 324 mm) and weight (2.1 kg). It also details power options, charging time (≈15 min), data storage capacity (<250 000 records), and USB interface. This manual is written in Chinese.
| Operating temperature | 0 °C ~ +50 °C (32 °F ~ 122 °F) |
|---|---|
| Storage temperature | -15 °C ~ +55 °C (5 °F ~ 131 °F) |
| RFID reading range | 0 ~ 2000 |
| Tag diameter | 30 mm (1.2 in) |
| Device thickness | 3.2 mm (0.13 in) |
| Length | 295 mm (11.6 in) |
| Width | 83 mm (3.3 in) |
| Height | 324 mm (12.8 in) |
| Weight | 2.1 kg (4.6 lb) |
| Power supply | Rechargeable NiMH 9.6 V battery, 230 V/50 Hz or 110 V/60 Hz input |
| Charging time | ≈15 minutes |
| Data storage capacity | <250 000 records |
The device operates from 0 °C to +50 °C (32 °F to 122 °F).
Charging takes about 15 minutes.
The RFID reader works over a range of 0 to 2000 (units as specified).