Buddy Platform Inc. SENSE100 用户手册

The OHM Link is a remote sensor node. Data is transmitted to an Buddy OHM via a low 
power 434MHz radio. 

The OHM Link can monitor up to four single-phase AC circuits using clip-on CT sensors. A 
plug-in AC-AC adapter can be used to power the unit and provide an AC voltage sample for 
real-power calculations. 3 x AA batteries can be used to power the OHM Link, if AC power is 
not available. 

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Energy monitoring add-on node 

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Optional add-on if more then two circuits need to be monitored. 

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RF Range is approximately similar to home WiFi and can be affected by obstacles e.g. 
thick stone walls 

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Up to 2x OHM Link can be connected to a single Buddy OHM

 

 

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Optional add-on sensor for interfacing directly with utility meters 

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Compatible with all utility meters with LED pulse output 

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Compatible with Buddy OHM&OHM Link    (one pulse sensor per unit) 

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Reports exact amount of energy (Wh) reported by utility meter 

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Cannot measure instantaneous power 

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Best used in conjunction with clip-on CT sensor(s) 

 

1. 

Microcontroller: ATmega328p 

2. 

Internal Sensor: Si7021 (internal temperature & Humidity) 

3. 

Power: 2 x AA from onboard holder, LTC3525 3.3V DC-DC boost converter to 
extend battery life 

4. 

RF Radio: RFM69CW 434Mhz