CSMIO-IP/S Driving Relays directly

[m_c]

Without seeing some proper details for the relays, it's hard to say, however given the physical size and type of relay, I'd say you'll be fine.
I've used similar sized relays from RS, and I'm sure the coil current is well under 100mA. I would check the exact figures, but the RS site is down for maintenance just now :/
Only thing I'd be concerned about, is will you need to add a diode to handle spikes when the relay is tuned off?
(I've never used anything CS-Labs, so you'll need to check the manual)