อุปกรณ์เสริม
| Item | Model number | Description | 
|---|---|---|
| Input terminal (Multi-inputs) | B-564 | 20ch input terminal, multi-input type | 
| Input terminal (Withstand voltage | B-565 | 20ch input terminal, withstand-high-voltage type | 
| Base unit for input terminal | B-566 | Base unit for input terminal (B-564 or 565) | 
| Connection cable for extension terminal | B-567-05 | Cable to connect GL840 and B-566, 50 cm long | 
| B-567-20 | Cable to connect GL840 and B-566, 2 m long | |
| Wireless LAN unit | B-568 | WLAN adapter, IEEE802.11 b / g / n | 
| Battery pack | B-569 | Rechargeable Lithium-ion battery (7.2 V, 2900mAh) | 
| Cover | B-578 | Rubber protector (for replacement) | 
| Bracket for DIN rale (GL840 main body) | B-570 | Bracket for DIN rail (GL840 main body), Build-to-order | 
| Bracket for DIN rail (extension terminal) | B-540 | Bracket for DIN rail (Input terminal), Build-to-order | 
| Input/Output cable for GL series | B-513 | 2 m long (no clip on end of cable) | 
| DC drive cable | B-514 | 2 m long (no clip on end of cable) | 
| Humidity sensor | B-530 | With 3 m long signal cable (with power plug) | 
| Shunt resistor | B-551-10 | 250 ohms 0.1% (it converts the signal to the "1-5V" from the "4-20mA") | 
| Storage case | B-581 | Storage for GL series (except GL7000 and GL100) | 
| AC power adapter | ACADP-20 | For replacement Input: 100 to 240 V AC, Output: 24 V DC | 
| Temp & Humidity sensor | GS-TH | Temperature and humidity measurement | 
| Illuminance & UV sensor | GS-LXUV | Illuminance and UV intensity measurement, cable 20cm long | 
| Carbon Dioxide (CO2) sensor | GS-CO2 | CO2 measurement, cable 20cm long | 
| Acceleration & Temp sensor | GS-3AT | Acceleration and temperature measurement, cable 20cm long | 
| Thermistor input terminal | GS-4TSR | Temp measurement (using a Thermistor), cable 20cm long | 
| Thermistor sensor (Normal type) | GS-103AT-4P | Temperature sensor (-40 to 105 ºC), 3m long, 4pcs/set | 
| Thermistor sensor (Ultrathin type) | GS-103JT-4P | Temperature sensor (-40 to 120 ºC), 3m long, 4pcs/set | 
| AC current sensor adapter | GS-DPA-AC | Current measurement (using a CT), cable 20cm long | 
| AC current sensor (50A) | GS-AC50A | Current sensor (CT) 50A, cable 20cm long | 
| AC current sensor (100A) | GS-AC100A | Current sensor (CT) 100A, cable 20cm long | 
| AC current sensor (200A) | GS-AC200A | Current sensor (CT) 200A, cable 20cm long | 
| Voltage & Temp input terminal | GS-4VT | Voltage or Temperature (using a thermocouple), cable 20cm long | 
| Module extension cable | GS-EXC | Extension cable for the sensor / terminal / adapter module, 1.5m long | 
| Dual port adapter | GS-DPA | Connect up to 2 sensor modules | 



