For mains water top-up, tops up the rainwater storage tank with mains water as required during prolonged dry spells (daily requirement for single-family home). Complies with DIN EN 1717.
Top up set | with 3 m (9 ft) connecting cable | TW 8803 |
with 10 m (32 ft) connecting cable | TW 8810 | |
with 20 m (65 ft) connecting cable | TW 8820 |